Struggling with My Past Self

I don't think I can live with myself anymore. I'm such a changed person from the years passed. I've changed and improved a lot from the person I used to be, but I still can't bare the think about who I used to be. I can't live with it. I try so hard to pretend like it was never real. I bury it so none of my newer friends become aware because I think if they knew who I used to be they'd abandon me. If they found out about my old lame interests, the communities I used to be apart of. I have a crippling fear of people finding my old social media accounts and all of the gross things I would say an do. I want to erase all of the things that I did in the past, but I can't. I haven't hurt people, I've just been apart of gross and toxic communities online and posted and said vile things. I can't take it anymore. I can't erase it. It's there forever. In the memory of myself and others. My life can be ruined. I'm so scared. I just wish I could erase my own memory and the memory of those who used to know me.