I have a lot of those symptoms except the SCT.
I take Bupropion and Vyvanse for ADHD. Both have helped me, and only one is a stimulant.
It was recommended to me to make lists so I don't forget what I am supposed to do. This sometimes helps, but often I forget the lists once I've made them. When trying to get things done, I use the trick of setting an alarm and just working on the task for 15 minutes straight without allowing myself to get torn away by distractions. That way I can break things into smaller chunks and get something accomplished. When I am taking a test at school, I make myself do 20 problems, then I allow myself a little break and draw a doodle or something as a reward, then I do another 20 questions, etc. Just now, I completed the first 4 questions of a 7 question assignment and I am now going to go take a shower as a reward (with a time-out on PC also

). Then I will come back and finish the assignment. It's a lot easier for me to get through a long assignment this way.
There are a lot of books out there on behavioral strategies for ADHD.
Good luck.