Sick and Tired of being sick and tired

I have been obese almost all my life. When I was 14-15 I had a back injury playing pick up football. At that point I actually lost a lot of weight, I wish I could have kept it off but I didn't. This time I want more sucess, working out has never been the main issue it is the diet. I've been diagnosed as diabetic for the past ten years, my doctor wants to put me on insulin, I cannot go on insulin so I must lose this weight. I intend to workout 5 times a week. One thing about e...