I Feel Like I Don't Live Up to Expectations

I feel like I don't live up to anyone's expectations. I feel lately that it's just too much for me and I feel worthless. I don't work and I fear working in any store because I have to engage with people (I have social anxiety). My parents wish I was someone who would get some sort of scholarship. My whole family wants me to get 90's in everything. I just can't do that. I have ADHD, so it's harder for me to study to get high grades. I at least am able to get 80's. I get compared to other people I know that work or get full scholarships and it really depresses me. It makes me feel that I'm not good enough even though I can honestly say I try.