It can be so hard to like yourself when other people treat you poorly. Add depression to the mix, and it is nearly impossible.

Skeezyks has a good point. Depression is cyclical. These dark feelings won't last forever. Will they come back? They might. But if you hold on, the darkness will be more than overcome with moments of beauty, joy and light. There are a lot of little things in life to appreciate, and you're so young. It's tragic that you have to go through this, but there is a purpose for your suffering. Maybe you're meant to inspire people someday.

As for how your "friends"-and especially your teacher!-treat you...it is despicable. You are a human being who is hurting. You deserve better, regardless of whether or not you believe it. People will come into your life who will treat you with kindness and respect; you just have to wait for them. Unfortunately, high school is filled with jerks. It's a law of nature.

I agree that you should see a therapist. This is a lot to try to deal with alone.