You're not the only one. I was diagnosed with ADHD when i was 5, took Ritilin until i was 12, when I developed a side effect where I would zone out. I've calmed down quite a bit, i'm nowhere near as hyper as i used to be, i used to be a terror. I made the Tazmanian Devil look like he was medicated with tranquilizer. I still have a very, very hard time consentrating on things, my fine motor skills are still quite underdeveloped and i have a very hard time splitting my attention on multiple tasks at once. Multi-tasking is almost impossible for me.