Is there one thing that you do like? Can you focus on that & compliment yourself that you look good? It may grow.
I've never really been happy with how I look especially with my weight which fluctuates.
But I do love my eyelashes! Weird I know, but it's my thing & when Im not feeling that great I can tell myself I have nice long eyelashes without trying or paying for them.
Find the little things & tell yourself you rock it!