Determining what it is you want is no simple matter. One nice technique is to ask "The Five Whys." Let's take an example: "I want to be rich."

Why 1: Why do you want to be rich?
Answer 1: I want to be rich so that I don't have to work anymore
Why 2: Why don't you want to work anymore?
Answer 2: Because I hate my job and I prefer to play
Why 3: Why do you prefer to play (one of two paths to explore)?
Answer 3: My work isn't fun. My play is fun.
Why 4: Why can't you have fun while working?
Answer 4: This job wont let me
Why 5: Why don't you leave this job and find one that is more fun?
Answer 5: Hmmm. I suppose that'd be easier since I can't retire right now

That's a quickie version. Whenever you get stuck wondering what your goal is, this technique is always good; although, sometimes you don't need to make it past the third why.