The first question you really need to ask yourself is where do you WANT to go? Is there anyplace you've always had a hankering to see?
Go down to your nearest travel agency & come home with as many brochures of as many places as you can, even places you've never even heard of... you never know, the place that might 'click' for you might turn out to be somewhere you would never even have thought of. But have a nosey around, check out your local library, cruise the Net & go down & rent a bunch of DVD's (locally made films as well as doco's). You want to know something about the place & culture b4 you go, not just the local tourist traps & "Features"
But DO look around! Because when you go you want to be going TO somewhere.. not just Away from somewhere. Now is your chance to do all the things you never had time for before. Like you said, time to start thinking about you & what you want to do with your life. Have fun

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Hope that's some help