It's good you know why you can't sleep. Now you can work on reducing the stress in your life or at least work on your coping skills for dealing with stress. That's probably what the doctor will want to see. Sleeping pills don't fix stress. But the doc might give you a short term Rx until you can get things under control. Might refer you to a therapist for help with the stress and anger.

In the mean time, you can try benadryl, melatonin, getting at least 30 minutes of exercise a day, etc.

Good luck.