Anybody else completely lost when it comes to what career you want to do for the rest of your life?

I'm 21 and started college two years ago studying psychology, then switched to sociology, but quit before second semester ended.

I just don't know what I want to do. I know I would love helping others in some way I just can't figure out how.

I guess I'm just asking for advice from anyone who's been in the same boat or has any ideas on what options I have.