How old are you? Mid-teens I'm assuming

All of your emotions/feelings/thoughts right now, are pretty much like a tornado riding a rollercoaster. I know everyone says Oh its part of growing up. Trust I've been there, and I'm still young enough to know and remember what being a kid is like and growing up. I've thought all of those same things, been in the same situations. Your not the only one. I still don't give a damn about people, but thats primarly due to the way my dad raised me to be stricly independent, and partialy due to... my mis-guided trust in the wrong people. Ages 14-19. It's all about living more, learning more, and growing period.
You might never know yourself. I'm sure alot of people don't but you seem capable and intelligent enough. So I'm sure you'll be ok. It's going to take alot of thinking, and you will torn on alot of decisions, and goals ect. You have to take time to yourself, be alone, think about all the reasons you don't "know" yourself. I hear alot of people don't find themselves until college. Atleast thats what the folks tell me. Also don't be a recluse, I don't know you personally, but being alone hurts alot when your a teen. Just advice.
Also Raziel's right about the objective opinion. You don't need shrink per'say but someone whom you know is intelligent and has a connection w/ you. I'm not sure if it should be a personal connection because then they might have feelins and emotions that could get tied in w/ thier advice.