I second BabyBat. Although I've just started out with this lifestyle change, I already feel fitter. By eating less sugar my pms is nowhere near as bad, I don't constantly have heartburn, and it takes me 1 day instead of 2 to get over having a few drinks. Things like this keep me going until I can see my smaller clothes fitting
About the depression thing. I've been there, I still am there sometimes, but a huge part of getting over that was learning to be more assertive and value myself more. I never lost weight before because I couldn't think of myself as a healthy person, only as someone who I didn't like. So I will say that anything that can help you with your depression and any self-esteem problems you have can have a greater impact that you might realise on your ability to lose weight. I hope everything works out well for you, angelsandfairies, you deserve it. There is no reason why you wouldn't deserve it, no matter how you may feel about it now