Welcome to our little group! I know what it's like to be depressed about your weight. I weigh about the same you do, only I had lose 30some pounds to get to that weight-talk about depressing!
I finally decided I am the one who controls my weight and what I put in my mouth. Nobody was force feeding me cake or m&m's or whatever. So it's me who has to get in control and do something.
The best advice I have is to come here and come here often-every day if possible. Sharing your ups and downs in mood and in weight will really help-almost like therapy!