Well, I hope that you don't take this wrong, but before you decide on the sleeve, I'd highly recommend some pretty heavy self analyzation. You really need to understand why it is that you turn to food for comfort. And yes, a counselor/therapist would be helpful. I am in no way calling you crazy, or even suggesting that you have problems that most of us don't deal with. Knowledge is power, and knowledge about yourself & your own habits is the greatest power to have.
Once you have a solid understanding of your triggers & your reaction to your triggers, by all means, I think being sleeved young will save you a ton of heartache & likely some health problems.
GOOD LUCK.