I got diagnosed way later in life and by happenstance (a psychologist informally recommended me to check it, and later did so).

It was a big improvement in my life, both helping me understand why I am this way and cutting myself some slack.

While youtube videos and books helped, it truly was interacting with a professional that could see the whole thing from the outside, and giving me directions on how to improve certain things, embracing who I am and helping me fit in this world.

Like driving a truck in a sea of cars, do not expect others to empathize with your situation, but you can addapt and better understand yourself, hopefully meeting people with similar conditions.

Just a kind reminder: It's hard telling you've got a flat tire from inside the car.