Hiya Electricianchic
First you may want to check out the Depression and Weight Issues forum area. Lots of people in the same boat.
The problem with diets (as I'm sure you've noticed) is that we tend to think of them as temporary. We either can't stick with them for very long, or even if we do lose weight we trick ourselves into thinking that we can "go back to normal". We have to start completely over. Forget dieting. How about changing the way you eat & live forever?
Select one thing that you can do tomorrow that you will be able to stick with. Will it be eating more fruits & vegetables? Will it be drinking water instead of juices & sodas? Will it be taking a five minute walk? Select a positive change, and then do it. Just for one day.
After that day is over, try to do the same again the next day... and the next. Pretty soon you'll have a couple of days of a really healthy change. Then you might want to step it up by changing something else along with your first change. Don't worry if you "slip-up" or something. Just get right back to it.
Soon enough you'll be thinking about choosing a food plan to follow or exercise plan. You'll be changing your life forever!
Have a look around, and make sure to post wherever you're comfortable!
Best of success!