Believe nothing a man tells you and everything he shows you
We have a finite amount of time. Whether short or long, it doesn't matter. Life is to be lived.
I'm a professor - there should be some lessons learned - and how you can use the stuff you hear today to enable your dreams or enable the dreams of others. And as you get older you may find that enabling-the-dreams-of-others thing is even more fun.
An injured lion wants to know if he can still roar.
Experience is what you get when you didn't get what you wanted.
Complaining does not work as a strategy.