Work in a startup three times in your life.

First, in your 20’s, to learn.
You are a sponge. Your goal is to learn, take on new challenges, hustle and make mistakes. Absorb all aspects of the business. Have lunch with anyone who will say “yes” (we all eat lunch). At this stage in your career, your advantage is time because you don’t know anything yet. The entrepreneurial spirit from the leaders will rub off on you. You have no meaningful financial equity, but you will learn, and this is your equity. You will discover yourself, what interests you and what your strengths are.
Second, in your 40’s, to earn.  
Now, you have the...