Life really is too short to take everything so seriously. I don't speak from experience, of course, seeing how I'm still alive. I also can't say that without explanation.
Really though, having the self confidence to post an unflattering photo is HUGE! I remember being bullied from K-12 and always feeling like an ugly nerd. It took a long time for me to have confidence. Had I not been bullied I wouldn't be as strong as I am now, and thank Zeus, genetics, Doctor Who, or Cthulhu, I grew into myself and am not too modest to admit I am an attractive woman. I'm glad that my life has been one that has molded me into a person that can post horrible selfies and laugh at them. If I didn't feel awesome daily I doubt I'd have the confidence. Thank you universe and genetics for the ability to be comfortably awful in photographs. I owe ya one.