Those are great ways to keep from rushing. I like to listen to audio books the most because they are a slower pace than tv, I feel like it almost matches the pace of me drawing.
I have noticed that over time, through simply practicing, my patience gets better. Once I know more about what I’m doing, the better I can slow down and keep at a steady pace. I hope over time that this will help you too. Practice doesn’t make perfection but it will significantly increase your skills