Who you are surrounded by in those first few years makes a big difference to future trajectory, atleast it did for me, so I'll say find ways to be useful to goo

Who you are surrounded by in those first few years makes a big difference to future trajectory, atleast it did for me, so I'll say find ways to be useful to good people i.e. people who teach/push you/make you think/amplify your strengths/get you to follow good habits without you realizing it etc etc. Corollary - Don't spend those early years around people who aren't doing those things.