I have ADHD; I admit it. I've got all these thoughts running around in my head at the same time as I'm doing other things. I can't seem to stop or slow down. But the good news is, I know how to control it. For every obstacle there's some type of solution. So if you have ADHD, it becomes your passion point to find ways to deal with it.
My ADHD makes it hard for me to focus on any one thing and to sit still. I'm always moving and thinking about a whole bunch of things. But those traits work well for me when I'm in the studio or coming up with creative ideas for songs or lyrics. If I were stuck at a different job, I'd be a horrible employee and wouldn't survive.
I don't control my ADHD with Ritalin, but with music. Music brings control to my thoughts. When I write music, I make order out of disorder. If you think about it, the songs I write are very ADHD-ish. They have five hooks in one, and it all happens in three minutes.
Music is my ADHD therapy and my straitjacket. It keeps me sane and keeps my mind focused.