Good clip from British professor Alan Watts about knowing what you desire in life.
You do that, and forget the money. Because if you say that getting the money is the most important thing, you will spend your life completely wasting your time. You’ll be doing things you don’t like doing in order to go on living that is to go on doing things you don’t like doing. Which is stupid! Better to have a short life that is full of what you like doing, than a long life spent in a miserable way. And after all if you do really like what you’re doing it doesn’t matter what it is, you can eventually become a master of it. The only way to become a master of something is to be really with it.