How do i start living and enjoying life for myself?

A bit of backstory: I’m 22 (i have diagnosed AuADHD) my parents (dad and step mom) are 65. My dad is rich. He refuses to help me with anything. i had to buy my first car, pay for my college, buy all my own clothing and furniture, and just recently i had to find my own apartment and move out without help. I had to provide everything for myself. I struggle with a lot of things because when i grew up i was around my abusive drug addict mother 24/7 and she has since passed away 4 years ago. however her abuse left me with life long problems and medical issues.

Anyways I decided i don’t want to finish college due to depression, stress, anxiety, and my major being taken over by Ai. My parents highly disapprove and want me to go back. They want me to do a trade, i don’t wanna do that, i like my job in sales at Home Depot. They’re mad at me and saying how I’m never going to live a comfortable life unless i continue college or join the military or something like that.

I feel like my world is constantly falling apart i feel like unless i go and get a degree and a job in something i don’t care about that im going to be homeless or unhappy and broke for the rest of my life. I feel like im useless and I’ll never succeed because i don’t wanna go to college again. I’m 22 and i feel like im already failing at life and i haven’t even started it yet..

So my question is: How do i start living for myself? How do i stop feeling like im a failure? Am i a failure? Can i still live a good life working the job i have?

I just wanna be happy…