I wish I hadn't spent so much of my life being overweight/obese

As cliche as it sounds, consider this the first day of the rest of your life. I've certainly missed out on so much as a result of being obese, but there's nobody to blame for that but myself. At this point I have to write off my 20's, by the time I lose the weight I need to lose I'll be 30, but I'm going to make sure I have a fantastic 30s and make up for the time lost.