I'm sorry Vossie. I wish I could give you a big hug. Self esteem struggles are one of the worst imo.

Maybe try each day or each week to find something positive about your self and focus on it for that day. When I'm feeling bad about my looks I will find something that I'm better at than looks and keep telling myself ok I can't be a good looker but I know how to do this better. I have always struggled with my sister looking better than me and everyone always saying how pretty she is but never really much about me so in turn I think well she may look better but I know how to cook better or handle my temper better etc. I know it sounds silly but these give me a tiny boost in my self esteem. It does help.

Just try to remember too that nothing is more attractive than an awesome personality. Yeah others may have pretty faces but most them probaly have dull personalities. I always try to remember this. Hang in there!