Friends.. They can be a great thing. Can.
Friends aren't always who you think they are. Don't be afraid to loose a friend. You will gain new friends that care more about you. Don't be afraid to stop being friends with someone either. Not just for no reason. But if a person that is your "friend" isn't really being a friend, then don't be friends with them. Focus on the people that care about you more than the rude "friends" that make fun of you.
Sometimes taking a break from your friends is a good thing. I do that all the time. They think I'm weird, but I don't care because I'm just helping myself. I would definitely say that not all my friends are real friends. Some of my "friends" call me names, make fun of me, mess with me, etc. I know it's just for fun but honestly, it gets annoying. Like today at school, they were being super rude. So I took a break and didn't sit with them at lunch. I sat with another girl who has always been there to support me and help me. I tell her everything, and it's really nice to be able to have someone to lean on when you need help.
Choosing the right friends is a hard thing. Sometimes you don't know who people really are until you're friends with them. That's just one of the hard things about life.
Pretending to be someones friend isn't good either. It makes me mad when someone pretends to be my friend, because I can tell.
If you have a best friend and you feel like you are falling apart, talk it out. Not to another person, but to the person themselves. Talking about people behind their backs may be fun to do, but when someone does it to you, it's not very fun. It's never fun, so don't do it in the first place. It will ruin your relationship with anyone.
I have a lot of guy friends. They are have less drama. When I'm not getting along with my friends, I sometimes just talk to the guys. They're there for you. Guys might not completely understand your situation, but if you talk to them, it helps.
Part 2 coming later! :)