How you start a new job can set the tone for your overall experience at a company, including the relationships you build and opportunities that come your way in the future.

That’s why being strategic about your first 90 days is crucial, says Donna Morris, executive vice president and chief people officer at Walmart. Morris has been in the C-suite for almost 10 years, and has held executive-level roles since 1998.

Morris says her success is due, in part, to dedicating the first three months on a new job to communication and clarity — and she recommends that others do the same.

“In the first 90 days, do as much as possible to really understand who you’ll be working with, how they work and what’s expected,” says Morris.

That means tapping into your interpersonal skills and asking your boss, managers and co-workers not just about their jobs and responsibilities, but who they are and how they show up best at work.