I would recommend that you not try to lose weight-as in pounds on the scale. You are already at a pretty good weight for your height.
You simply, need to start exercising regularly to gain some muscle and lose body fat. You can very well stay around the same weight, and look a heck of a lot better in a few months time-just by getting more fit.
Make a choice to start eating a little healthier-more fruits and vegetables and less junk-but I wouldn't really worry about the scale so much.
If you are experiencing depression, studies have shown that cardio exercise actually helps with depression. I know this from experience.
So, if you do strength training, yoga, Pilates, or whatever-just make sure that you are getting some cardio time in as well to burn calories and alleviate your depression.
Good luck to you, and let us know how it is going.
Aphil