I often suffer from a mind that won't rest when I'm excited about a project or software problem. Have been like that for 20 years now and have only found a cure

I often suffer from a mind that won't rest when I'm excited about a project or software problem. Have been like that for 20 years now and have only found a cure in the last year. I listen to an audiobook for 15 or 30 minutes when I get into bed. Gets my mind off everything and allows me to relax and fall asleep. Sometimes I really get into the story which can be another problem. But that is rare.