This list from List Your Self reminds me of how much I disliked then that doesn't bother me now.

• I was overweight. (A medication I was taking made me always thirsty and I drank pink lemonade instead of water.)
• I didn't grow as tall as I wanted.
• I always thought I wanted my chest to be larger. (Apparently I didn't think about the inconvenience and other consequences.)
• I got stretch marks.
• I had natural blonde hair with highlights. (And I wanted to dye it black. Why? I don't know.)