Through gratitude exercises, perspective taking, therapy lectures, open awareness meditation, and other things. Another thing is, I have Crohn’s disease, an inflammatory bowel disease that can (rarely) be fatal, and which is often very painful. Yet with lifestyle changes I have kept it mostly in remission for about 12 years. Honestly, just having eyes, ears, a tongue, nose, and body overall that actually works is something to be very grateful for. Also, my body actually isn’t as masculine as a lot of males of my height (5 foot 11 inches). My height, even though I’d rather be shorter, is indeed very convenient as I can reach things on tall shelves, I also think it makes people less likely to assault me physically. I’ve successfully lost 180 pounds in my life with diet and exercise alone, which is also something to be grateful for, and if I can do it once, I can do it again. Slowly but surely I can turn my attention towards those things about my body which are nice instead of focusing exclusively on those which aren’t, even if that doesn’t erase regrets.