Actually, I haven't since High School but last week I saw myself in the mirror and was disgusted. I'm a 21 year old, Type 1 Insulin Dependent Diabetic (I was diagnosed in my Sophomore year of High School) who has always been a bit bigger than normal... But right now, I'm disgusted. I'm 6'1" and in the ballpark of ~290 lbs. Over the last week, I've began dieting (Slim Fast since I had success with it in High School), working out daily (I have a bunch of machines in the basement, along with a treadmill and stationary bike), and riding a bike in the evenings with my mother. (She has MS, and needs to start working out her legs)
Basically, I'm looking for any advice from people who have been in a similar situation (obviously the Diabetes thing doesn't mean much) of noticing how out of shape you've gotten, and what you did to get back into shape. I feel as if I'm going about this the right way, but I'm always open to others opinions.
I also have access to P90X (I did this in High School as well) which I'm considering doing instead of working out on the machines in the basement. My main goal right now is to cut the weight (hopefully down to 220 lbs eventually) and then worry about toning up later.