Maybe what happens is that you're not happy with what life had in store for you. But one of the things I'm certain of is that you mustn't accept the first thing that comes your way. Whatever you would like to be doing in your life, go after it no matter how easy and sensible the alternatives look in comparison.
And you could always read about one of these or both, you may like it and it may help you too:
http://en.wikipedia.org/wiki/Epicureanism
http://en.wikipedia.org/wiki/Stoicism