@antonette I know how you feel. You try to sleep, but thoughts just bubble up and you twist and turn in bed to try to find comfy spot to turn your system off, but it just won't. Stress is the main cause of that and depression as well. My virtual hug to you. Tim Ferriss is a cool dude who has been struggling with insomnia too, he describes that it is difficult to turn of his monkey mind. You can find his blog about it here https://tim.blog/2008/01/27/relax-like-a-pro-5-steps-to-hacking-your-sleep/

I recommend for you to not to do anything work related at least one hour before sleep.