Everything is wrong and it's my fault

Sooooo, this is going to be a hell of a long post but, I need help. I really do, so if anyone is up to read all this and maybe giving me some advice, I'd really appreciate it:

I am 22 years old, soon to be 23. I am depressed and have anxiety issues. I've been on medication since I was 13 and most recently found out I also have ADD. My ADD makes an hour feel like a minute as I get distracted on pointless or unproductive things. Recently I've started to take adderall/vyvanse and I've seen a major improvement. As well as with my other medications, they've all helped fine. I've also been to a few therapists, one whom has helped with a lot of my issues with my parents. The problems I am having now, are more toward actually doing anything at all. It's always been a problem but, as time goes on, it's gotten to a point where I just do not know what to do anymore. Everyday feels like a challenge. I don't want to get up, I don't want to go outside, and I don't want to deal with anything. I sleep a lot, way more than anyone should. I have dropped out of school for the time being and I don't have a job. The very thought of starting these activities gives me immense anxiety and fear. I have lost contact with all my friends, I barely even speak to my family anymore. I lie about very stupid things, things that I don't need to lie about. I just do, someone asks me something, I panic and I say what I think is the best answer so that I don't get in trouble in any possible way. I'm very afraid of talking to people. I've always been shy but now, I find it extremely difficult to even go outside. The longer this goes on the more isolated I become. I avoid looking for jobs, thinking about what I want to study, and even when I try to look for something, I either put it off or distract myself immediately. I have gained 50lbs and am in very poor physical shape from sleeping/lying down all the time. I can feel my body dying from the lack of movement. I don't want people seeing me looking the way I am now. I feel ugly and worthless. Right now I'm residing with my dad and his fiancee. Despite his pleas, our crying, my promises, I never change. I can't explain why I do what I do, I love my father very very much. It kills me to be such a hindrance on him financially and emotionally. All of my family worries about me all the time, I have so many wonderful people who love me, I have a roof over my head, and security. I have all the motivation in the world, yet nothing works. Nothing helps, I care and at the same time do everything that would suggest otherwise. I don't know what it is. It feels like there is literally an object in my mind stopping all progress. It just shuts down. I know I am a great person, I really like a lot about myself. However at the same time, I hate myself. I feel like a waste of life. I feel like deep down all I do is because I'm just a bad person. I'm selfish and self-centered. Or that's what I'm afraid is the truth anyways. That all of this is in my head. Nothing's wrong with me, I'm just shitty and selfish. I don't know what to do, I don't know how to push myself to do things. I almost feel like I would be better if I had my parents telling me what to do, like having disciplinarian in my life. Lord knows I can't do it myself. I need someone's help, I do. I'm scared and feel the world is pointless. I'm afraid I will do nothing with my life and I'll be where I am in forty years, living off my dad, being a n ever present leech, Please help, please.