The first 90 days are the most critical period in any PMM role: they shape your credibility, influence, and trajectory long after onboarding ends. Drawing on insights from coaching nearly 100 PMMs 1-1 through real onboarding periods, Yi Lin Pei breaks down how to navigate different environments, from fast-moving startups to complex enterprises, without burning out. You’ll learn tried-and-true strategies to prioritize the right work, build allies quickly, and deliver early impact while protecting your confidence and sanity.