The best thing in the world I ever did was go see a psychiatrist to get tested to see if I was ADD. After the test came back positive, he prescribed meds, and after finding one that worked for me, I was simply blown away.
I never knew that you could actually think about one thing at a time before. I never really understood what it was to have a conversation and not be thinking about a billion things. I never, ever, knew what it meant to focus on something. It's entirely changed my world.
Wish you well my friend. At least go get tested. If you decide to take meds or follow some other avenue, it's better to know what you're working with.