Discipline has always eluded me, so I think you are right about ordering your environment.

As to diet, I lost a lot of weight a couple of years ago by eating a crazy diet, that I in no way recommend, except, the weight has stayed off.

Basically, I eat at least 6 chocolate bars every day, and just eat less of everything else to keep my calories at 2500 per day. I know it doesn't sound healthy, but what I find is that it tricks my mind into enjoying the diet, cos I know for a fact that I will get to eat lots of chocolate (my favorite thing), every day lol!