Prepare yourself before day one.
Watkins emphasizes that transition acceleration begins before you officially start the role.

Book summary
by Michael D. Watkins
Critical success strategies for new leaders
Proven strategies for getting up to speed faster
Topics
Read this book as an action plan for your next leadership transition. Use Readever to highlight the ten principles and create your own 90-day acceleration plan. Focus on one principle per reading session and immediately apply it to your current or upcoming role. Use Readever's AI to customize the framework for your specific organizational context and track your progress through the transition phases.
Things to know before reading
The First 90 Days provides a systematic framework for leaders transitioning into new roles. Based on research from Harvard Business School, Michael Watkins outlines ten proven principles that help executives accelerate their learning, build momentum, and secure early wins during the critical first three months of any leadership position.
Watkins's framework transforms the chaotic first 90 days into a structured acceleration period with ten strategic principles.
Watkins emphasizes that transition acceleration begins before you officially start the role.
The most effective leaders create structured learning plans rather than relying on osmosis.
Early wins create credibility and demonstrate your ability to deliver results.
Ready to continue? Launch the Readever reader and keep turning pages without paying a cent.

Stephen R. Covey
Transformative principles for personal effectiveness and leadership

Dale Carnegie
Timeless principles for building relationships and social influence

Simon Sinek
How great leaders create environments of trust and cooperation
This summary gives you a proven roadmap to navigate the most vulnerable period of any leadership role. You'll learn how to diagnose your situation, build crucial alliances, secure early wins, and create momentum that sustains long-term success.
Key idea 1
Watkins emphasizes that transition acceleration begins before you officially start the role.
Successful leaders start preparing weeks before their official start date. They research the organization, understand the business context, and mentally prepare for the challenges ahead. This preparation includes learning about the company's culture, key stakeholders, and strategic priorities. By entering the role with clear objectives and a learning plan, leaders can hit the ground running rather than spending their first weeks disoriented.
Remember
Key idea 2
The most effective leaders create structured learning plans rather than relying on osmosis.
Watkins argues that leaders should dedicate significant time to learning during their first 90 days. This includes understanding the business, the organization, and the culture. Effective learning involves structured conversations with key stakeholders, reviewing critical documents, and identifying the most important challenges. Leaders who systematically accelerate their learning make better decisions and build credibility faster.
Remember
Key idea 3
Early wins create credibility and demonstrate your ability to deliver results.
Strategic early wins are crucial for building momentum and establishing credibility. Watkins advises leaders to identify opportunities where they can make visible progress quickly—typically within the first 30-60 days. These wins should align with organizational priorities and demonstrate your value. The key is to choose initiatives that are achievable, visible, and meaningful to key stakeholders.
Remember
The First 90 Days is a comprehensive guide for leaders transitioning into new roles. Based on extensive research from Harvard Business School, Michael Watkins provides a systematic framework to help executives navigate the critical first three months of any leadership position. The book addresses the universal challenges leaders face when moving into new organizations, departments, or roles.
Watkins identifies ten proven principles that accelerate transitions, including preparing yourself, accelerating learning, matching strategy to situation, securing early wins, and negotiating success. The framework helps leaders avoid common transition pitfalls and build momentum that sustains long-term success.
Open Readever's reader to highlight passages, ask the AI companion questions, and keep exploring without paying a cent.
Watkins combines academic rigor with practical application, creating a framework that's both intellectually sound and immediately useful. The book's strength lies in its systematic approach—it doesn't just offer general advice but provides specific tools and checklists that leaders can apply directly to their situations. The case studies and examples make the concepts tangible and relatable.
Critical Reception: The First 90 Days has become the definitive guide for leadership transitions, used by organizations worldwide for executive onboarding. With over a million copies sold in English and translations in 24 languages, it remains a staple in leadership development programs. The book is praised for its practical framework and evidence-based approach to one of leadership's most challenging periods. It has been featured in Harvard Business Review and is considered the classic reference for leaders in transition.
Executives transitioning into new leadership roles
Managers moving between departments or organizations
HR professionals designing onboarding programs
Anyone preparing for a significant career transition
Leaders facing organizational restructuring or change
Michael D. Watkins is a professor of leadership and organizational change at IMD and co-founder of Genesis Advisers. Before joining IMD in 2007, he was an associate professor at Harvard Business School and the Kennedy School of Government at Harvard University. His research focuses on leadership transitions, negotiation, and organizational change.
Watkins has advised numerous Fortune 500 companies on leadership development and executive transitions. In addition to The First 90 Days, he has authored several other books on leadership and negotiation. His work has been featured in Harvard Business Review, The Wall Street Journal, and other major publications. Watkins is recognized as one of the world's leading experts on leadership transitions.
Build your personalized reading stack
Download full-length ePubs in one click with personal cloud storage.
Blend AI-guided insights with tactile note-taking to accelerate reflection.
Follow curated reading journeys tailored to your goals and time budget.
Sync highlights across devices so lessons stick beyond the page.
Sign in to Readever to keep reading with AI guidance, instant summaries, and synced notes.
The First 90 Days provides a proven framework for navigating leadership transitions successfully. Watkins's ten principles transform the chaotic first three months into a structured acceleration period. By preparing systematically, accelerating learning, securing early wins, and building key alliances, leaders can establish credibility quickly and set themselves up for long-term success.
Transition acceleration begins before day one. Successful leaders:
Systematic learning beats random discovery:
Different transitions require different approaches:
Strategic early wins build credibility:
Clarify expectations and resources:
Ensure organizational structure supports strategy:
Assemble the right team for success:
Build support networks across the organization:
Maintain perspective and resilience:
Help your team through their transitions:
Track these indicators during your first 90 days:
Start reading The First 90 Days for free and unlock personalized book journeys with Readever.