How to get a life? Uni?

This has literally stolen my life away. I'm 21 and I couldn't sit a levels. Tried twice. Now I finally finished an access course and I'm desperate to have some independence and be an actual normalish person instead of a woman-child that lives with her parents and depends on them for everything. But that requires I actually get a handle on my ed. And I'm trying but. Its so fucking hard. I might not be able to. I might be stuck in my family home forever, never learn how to be an adult. I'm already embarrassed how behind I am. Never go anywhere by myself.. And yet I can't grt a handle on food. It just controls me. I hate worrying about eating too much, and wanting food all the time but hating being full, so much so that I just binge on literally 30k cals a day, purging all the time.. i have a therapist but im still stuck. I dont know why i cant get better Tldr I'm stuck in the bp addiction and it's ruining my chance at adulthood and an education and career and personhood in general.