If you get the chance to travel do it.
...but don't forget to use your head; Because when you feel that you know people, you really don't.Follow your heart.
Take what you want, when you want..
Depressing thread is depressing.
But good.
I would have thought similar to you when I was your age.
Remember, quite often making yourself happy is a result of seeing a friend/partner happy.
It can't all be take take. If you do, you will end up a very lonely person - so sometimes you DO need to do what makes others happy, at your own sacrifice.
And people changing you (subtly) can be a good thing (Mrs Fidget would agree). You should learn by your mistakes and change for the better as a result.