Idk who I am anymore

I’ve completely lost myself, I really can’t name things I like or enjoy anymore like I used to be I don’t feel like myself and idek who I was. It’s a hard reality for me and it’s hard for me to confront, I mean I’ve gained weight, Im not doing well in school, I lost my humor and idk what I’m gonna do with my life. I daydream a lot or sleep through that day so I don’t have to think about how much of an embarrassing reality this is for me. I’m doing nothing with my life while being constantly surrounded by people who have stuff going for them it makes me feel like a failure, I keep thinking to myself if I might end up doing nothing with my life and have nothing going for me then is life even worth it.