How do I move forward when I feel years behind everyone else?

How do I move forward when I feel years behind everyone else?

I'm 22 and I feel like I'm really behind in life.

The weird thing is that from the outside I probably look mostly fine. I have a job, I talk to people, my coworkers like me, I joke around a lot, and most people probably wouldn't guess how much I struggle.

But inside I feel like I missed years of normal life.

I spent most of my teenage years isolated, depressed, insecure and waiting for life to somehow start later. I was always kind of high-functioning, so I managed to get by, but I never really felt like I was living.

Now I'm trying to fix things. I'm on meds, I lost weight, I'm starting the gym again, I go out more, and I'm trying to do something with my life.

But it feels like I got the tools too late.

I really want to finish school, maybe start college next year, get my driver's license, build a social life, date, become more independent and finally feel like an adult.

And honestly, just writing that list makes me tired.

I can talk to people. I have friends from work. There is even a girl I get along with really well. So it's not like I'm completely hopeless socially.

But I still feel like I'm behind everyone else and pretending better than I'm actually doing.

Sometimes I don't know what part of this is ADHD, what part is depression, and what part is just years of isolation.

How do you move forward when you feel like you started life late?