1) There is hope! Don't give up.
2) Many people will not understand. That's okay.
3) Cognitive Behavioral Therapy (CBT) works. It's hard work, but it's easier than having depression and anxiety. It's really about renewing your mind. Best book on the subject is an old one: http://www.amazon.com/Feeling-Good-New-Mood-Therapy/dp/03808...
4) You have to find help from others. You will likely run into quacks, and well-meaning but unhelpful advisers. Don't give up.