@Yeagin have you spoke to a professional (psychologist/psychiatrist/therapist, etc) about how you feel like progress isn't being made? i reckon talking to them will help you find those answers you're looking for. 

this is my personal view - but i think a lot of the times we don't notice the progress we make. it can be hard for us to see especially when we're not in our best head space, but i do think its there. 

you mentioned you've lost all contact with acceptance, i'm wondering how you feel about practicing gratitude? i know it isn't easy to do, but in some of my lowest times i've forced myself to go out on a walk and found that appreciating the lil beauties of the world like the birds chirping or the change in sky colour as the sunsets, accepting and being grateful for nature helped me slowly start accepting myself and my life. is practicing gratitude or even connecting with nature/outdoors something you'd try?