The problem for a lot of people is that they don't really know what they want. They have vague desire: to 'do something creative' or to earn more money or 'to be free', but they can't really pin down what it is precisely that they want.
So they drift from one thing to another, enjoying some moments and hating others, but never really finding fulfillment or success. (..)
This is why it's hard to lead a successful life (whatever that means to you) when you don't know what you want.