My main one is a notebook that never leaves my side. If I have a thought, impulse or idea that isn't what I'm currently doing, I quickly write it down, usually with a flowchart kinda sketch and then go back to what I was doing. I give myself a maximum of about 15 seconds for this. Once I finish what I was originally doing I look in the notebook and pick the next thing to do.

The other big one is 3 goals a day. Every morning when I wake up, I give myself 3 goals that I must accomplish before going to bed. Generally they're trivial things, take out the trash, wipe down the kitchen counter, that kind of thing. I find that no matter how simple, it gives me the feeling of accomplishing something I set out to do and helps me reinforce non-impulsive thinking/decision making and remind myself that I can in fact finish a task that I thought of more than 30 seconds ago.

I can expand on how I cope tonight when I have more time if you'd like.