Being a teen can be tough. Just try to surround yourself with really good friends that really have your back and also be a really good friend to those who really care about you. If you're not sure about certain things talk to your friends that you trust and your family.
I'm going to get up every morning at 6:30 to work out. Then when I've kept with it all week I give myself something I really want like a new handbag or a piece of jewelry I'm coveting.