I'm not sure I have the answer for you, but I'd like to share that I had a similar experience.

I wasn't officially diagnosed with a mental illness until I was 22. I had problems as a teenager and into college but felt I was unable to get treatment. I haven't had the best family relationships, and I was not willing to share my challenges with my parents. For years, I was just counting the days until I was off of their health plan because I knew one of the first things I was going to do was get some help. I made it thu, barely. I had a lot of social difficulties in high school and academic difficulties in college. With treatment, things may have been easier.

I sought treatment as soon as I was off their health plan just as I planned to do. I am happy to say I am doing very well.