Okay I have to chime in. From a person who has went through depression and feeling hopeless. I sit here typing to you, at 291 lbs, 100 pounds overweight, that if I can do this, you can!
Start very slowly, just make one small change in your eating and lifestyle. Don't start out cold turkey, that will only get you frustrated and set you up to fail. You have to really think about something...life is so precious. We all don't know how long we have here...to enjoy life, enjoy family, enjoy friends, to just enjoy the air we breathe. Don't give up, you deserve to be happy. I know you can do this. I am doing it. I am doing it because if I don't, I won't be here to enjoy anything that life has to offer. Chin up