Phycology or Psychiatry? Please Help?!?

Im only 16 but I'm starting to think about my future and career seriously. I really want to be a phycologist, I love to help people and figure people out. I love the mystery behind human thoughts and emotion. But, now that I'm looking more into it I don't know if I want to be a phycologist or a psychiatrist? Please tell me the difference between them, I know a psychiatrist can prescribe medicine but what are some other contrasts? I would also like to know how much each salary is yearly. Which usually makes more? Maybe if you are a phycologist or psychiatrist you can give me personal info. Or maybe you know someone who is one? Any information will help me out. Thank you so much! :)