Kaelia, you ARE strong. The simple fact that you're here, that you posted this means that you are. Depression is a monster, I know that sometimes as hard as i try I can't stop the plunge, and I can't dig myself out either, I have to wait it out. Try not to be so hard on yourself, and like turquoisesea said, try to let the anger out in healthy ways. I know that it can't be easy to control but it can't be doing you any good either. I would imagine that it makes you feel even more depressed which would only feed it more. Try instead to give yourself a big pat on the back for being here, for feeling hopeful and ok at times, and just for being you!

I truly hope that you overcome these feelings of anger and feelings of being weak and instead replace them with something positive.