Watkins was a Harvard Business School professor specializing in leadership transitions, and "The First 90 Days" is the canonical operating manual for the executive transition. The book is built from research with hundreds of leaders moving into new roles (new company, new function, promotion to a larger scope) and codifies the patterns that distinguish successful transitions from failed ones. The central argument is that the first ninety days disproportionately determine the next two years: relationships set in the first quarter become hard to reshape, credibility built or lost early carries forward, the diagnostic mistakes made before the leader understood the situation compound, and the political alignments formed early are difficult to undo. For a CMO stepping into a new role (whether moving companies, getting promoted internally, or taking on an expanded scope), this is the operating playbook. The frameworks (the STARS model for situation diagnosis, the negotiating-with-the-boss conversation, the early-wins identification, the team-restructuring sequence) are not flashy. They are the unglamorous discipline that distinguishes the executives who build momentum from the ones who get fired in year two. Watkins's research found that approximately 40 percent of new executives fail within their first eighteen months, and most of the failure traces back to specific mistakes in the first ninety days.
Core frameworks
1. The STARS model
The situation a new leader inherits falls into one of five archetypes, each requiring different priorities and different early moves.
Start-up: the leader is building from nothing. New product line, new geographic market, new function created from scratch. Priorities: hire fast, establish foundational processes, secure resources, articulate vision. Communication style: visionary, energetic, frequent. Team-building approach: hire aggressively, accept that early hires will not all be right.
Turnaround: the leader is rescuing a function or business in active failure. Priorities: stop the bleeding, make hard cuts fast, rebuild credibility through visible wins, restructure aggressively. Communication style: decisive, direct, willing to deliver bad news. Team-building approach: assess fast, make changes within sixty to ninety days, accept the political cost.
Accelerated growth: the leader is scaling a working business through a growth phase. Priorities: build operating discipline that the founder-led team never had, hire ahead of growth, instrument the function. Communication style: process-oriented, calm, focused on systems rather than heroics. Team-building approach: hire experienced operators who can take pieces of the function off the leader's plate.
Realignment: the leader is fixing strategic misalignment in an otherwise-functioning business. Priorities: diagnose the misalignment carefully, build the case for change, secure executive sponsorship, sequence the changes to maintain operations. Communication style: analytical, patient, evidence-driven. Team-building approach: assess existing team for alignment with the new direction, make targeted changes rather than broad restructuring.
Sustaining success: the leader is maintaining a top-performing operation. Priorities: protect what is working, develop the next generation of leaders, identify the disruption risks the prior leader missed. Communication style: humble, curious, focused on the team rather than the leader. Team-building approach: invest heavily in development, succession planning, and team coaching.
A new CMO inheriting a turnaround needs to make hard cuts fast and rebuild credibility through visible wins; the same CMO inheriting accelerated growth needs to build operating discipline that the founder-led team never had. The same actions that succeed in one situation fail in another. The leader who applies turnaround tactics to a sustaining-success situation produces unnecessary disruption and gets fired. The leader who applies sustaining-success tactics to a turnaround situation gets fired faster.
If you only remember one thing: the STARS diagnosis determines almost everything else. Run it in the first two weeks.
2. The negotiating-with-the-boss conversation
Watkins identifies five conversations the new leader must have with their boss in the first ninety days, and the order matters. The leader who runs all five early outperforms the leader who hopes alignment will emerge on its own.
The situational diagnosis conversation: align with the boss on which STARS situation the leader is inheriting. The boss may have a different read; that disagreement needs to surface early, not in month six. The conversation produces shared understanding of the priorities the situation demands.
The expectations conversation: force the boss to articulate what success looks like in the first year. Specific, measurable, time-bound. Without the explicit conversation, the leader is working against the boss's unstated mental model and often discovers the misalignment too late to correct. The conversation produces a working contract for the year ahead.
The style conversation: how does the boss prefer to be updated, what frequency, what level of detail, what surprises do they not want to learn about in meetings. The leader who adapts their communication style to the boss's preferences gets more political support; the leader who imposes their own style burns capital unnecessarily.
The resources conversation: what budget, headcount, executive sponsorship, and political support does the leader need to deliver on the expectations? The conversation produces the explicit resource commitment that the leader can reference when budget battles arise later.
The personal-development conversation: how does the boss want to develop this leader, what does the leader need to learn, what coaching or mentorship is available. The conversation produces shared understanding of the leader's growth path inside the organization.
Watkins emphasizes that the conversations are structured, not ad hoc. They should be scheduled explicitly, framed as transition conversations, and produce written notes that both parties review. The structure forces alignment that organic conversations would not produce.
If you only remember one thing: five boss conversations, scheduled in the first thirty days. Do not let them happen by accident.
3. Early wins and the credibility accelerator
The new leader needs visible early wins to build credibility, but the wins must reinforce the broader change agenda rather than distract from it. Watkins prescribes a careful selection process: identify a few high-visibility opportunities that are achievable in the first quarter, deliver them publicly, and use the credibility to fund the bigger work.
A worked example: a new CMO inheriting a stagnant marketing function might choose a high-visibility brand-refresh deliverable as the early win because it signals competence broadly without committing the organization to a specific strategic direction before the leader has finished diagnosing. The refresh delivers visible work, demonstrates the CMO's taste and judgment, and creates the credibility to make harder bets later (a pricing restructure, a team restructuring, a category repositioning) that would have been politically harder without the early win.
The opposite failure pattern: the new leader chooses an early win that contradicts the broader change agenda. A new CMO who launches a high-visibility performance-marketing campaign as the early win, then six months later argues for brand-building investment, has produced an organizational whiplash that erodes rather than builds credibility. The early win should be a deposit in the credibility account, not a position the leader will later need to argue against.
Watkins's selection criteria for early wins: visible to the executive team, achievable within the first quarter without requiring extensive new resources, reinforces the broader change agenda the leader is pursuing, and avoids creating new political enemies. Wins that meet all four criteria are rare; the leader who identifies one or two is in good shape.
If you only remember one thing: the early win must reinforce the broader change agenda, not distract from it. Choose deliberately.
4. The technical-political-cultural learning agenda
Watkins distinguishes three layers of learning the new leader must do in parallel: technical (what does the business actually do, how does the function work, what are the metrics), political (who has power, who has trust, what are the active conflicts), and cultural (what are the unwritten rules, what behaviors are rewarded, what is taboo). The leader who learns only one layer fails. The leader who learns all three in the first ninety days has the foundation for the next two years.
A worked failure mode: a new CMO who learns the marketing function technically (the campaigns, the budget, the team, the dashboards) but misses the political layer (the CFO who blocks all spend over a threshold without explicit pre-approval, the CEO's distrust of the previous CMO and the residual skepticism of anyone in that seat, the board member who has a pet agency they want considered) makes recommendations that get rejected for reasons the leader does not see. The recommendations may be technically correct; the political layer determines whether they get funded.
A second failure mode: the leader learns the technical and political layers but misses the cultural layer. They make recommendations that contradict the unwritten rules ("we don't pitch ideas without socializing them first," "we don't bring in outside agencies on board-visible projects," "we don't restructure teams without sixty days of consultation"). The recommendations land badly because they violate norms the leader did not know existed.
The parallel-learning discipline: schedule explicit learning conversations across all three layers. Technical learning happens with the team, the data, and the existing documentation. Political learning happens with peer executives, board members, and key external stakeholders. Cultural learning happens by observing what behaviors are rewarded, what behaviors are punished, what stories the organization tells about itself.
If you only remember one thing: technical learning is not enough. The political and cultural layers determine whether your technical decisions actually get implemented.
5. The transition acceleration model
Watkins frames the first ninety days as a five-step sequence: prepare yourself (mental shift from old role to new), accelerate your learning (technical, political, cultural in parallel), match strategy to situation (STARS diagnosis), secure early wins (credibility), and build the team (assessment, restructuring, hiring). The sequence is overlapping rather than strictly sequential, but the order of emphasis matters.
The mental preparation step is often underweighted. Leaders coming from a successful prior role bring patterns, assumptions, and expectations from that context. The new context is different. The patterns that produced success in the prior role may produce failure in the new role. Watkins's research found that leaders who explicitly named the assumptions they were carrying from the prior role outperformed leaders who unconsciously imported them. The mental preparation is the diagnostic move that prevents the most common failure pattern: applying yesterday's solutions to today's problems.
Watkins cites case studies of executives who arrived with strong opinions from the previous role, applied them immediately to the new situation without diagnosis, and produced predictable failures when the new situation required a different approach. The CMO who built brand at a CPG company and arrives at a B2B SaaS company runs the brand playbook. The CMO who ran performance marketing at a DTC ecommerce company and arrives at an enterprise software company runs the performance playbook. Both fail. The new situation rewards different work; the imported playbook was the wrong tool.
How to operate: run the five steps in parallel rather than sequentially, but ensure the diagnostic steps (mental preparation, learning, STARS) precede the action steps (early wins, team building). Skipping the diagnostic steps to jump to action is the most common failure mode.
If you only remember one thing: diagnose before you act. The action that worked in your last role may be the wrong action in this one.
Actionable takeaways
- Run the STARS diagnosis in your first two weeks. Identify which situation you have inherited (start-up, turnaround, growth, realignment, sustaining). The diagnosis determines almost everything else.
- Schedule all five boss conversations in your first thirty days. Do not let any of them happen by accident or get deferred. The structure forces alignment.
- Identify two or three candidate early wins by week six and select one for week-twelve delivery. The win must reinforce, not distract from, the broader change agenda.
- Build the technical-political-cultural learning agenda explicitly. Map who you need to learn from in each layer, schedule the learning conversations, and capture what you learn before it fades.
- Resist the urge to make team changes in the first sixty days. You will not have the diagnostic depth to choose well. Watkins prescribes a ninety-day team assessment window with rare exceptions.
What this book is NOT about
This book is not specific to marketing. The frameworks apply to any executive transition: CEO, CMO, CFO, CTO, COO, VP roles, business unit leadership. The marketing-specific application is left to the reader. Pair with Dunford's "Obviously Awesome" (2019) for the positioning work the new CMO will need to do and with practitioner accounts like Phil Bunch's CMO transition writing for the marketing-specific patterns.
Two specific misreads to avoid. First, "ninety days" is not a hard deadline. The book argues that the first ninety days disproportionately determine the next two years, not that everything must be done in ninety days. Leaders who treat the timeline literally and rush decisions to meet a date produce worse outcomes than leaders who use the framework as a structured diagnostic. Second, the early-wins emphasis is not a license for visibility-seeking. Watkins is clear that early wins must reinforce the broader change agenda; leaders who select early wins for personal visibility without strategic alignment produce credibility now and political damage later.
Field updates since publication: the book has been updated multiple times since 2003, most substantially in the 2013 edition that added material on transitions in digital and global contexts. The core frameworks are unchanged. The most credible contemporary critique: the framework skews toward established corporate transitions and less toward startup CMO transitions where the entire context is improvisational. The frameworks still apply but require translation. The book is dense in places and is best read in a single weekend before the first day in role, then re-read in week ten when the diagnostic depth is sufficient to apply the frameworks more precisely.
Want more?
Borrow the full book on archive.org: https://archive.org/details/first90daysprove0000watk
The original is about 270 pages with extensive case studies and worksheets. The summary above captures the operator-relevant frameworks. Read the full book if you are actively in transition or about to be; the worksheets are worth working through. Watkins' updated 2013 edition adds material on transitions in digital and global contexts. Pair with Dunford's "Obviously Awesome" (2019) for the positioning work a new CMO will own and with Marshall Goldsmith's "What Got You Here Won't Get You There" (2007) for the broader behavioral side of executive transitions.