This is a list that I'm sure I will find useful. What I have depended upon most so far is fiction. I've always loved reading fiction and I write/self-publish, too. I find I can be really stressed out, feeling breathless and as if my heart is racing, but if I can sit down for at minimum 15 minutes or so and lose myself in a fictional world, I get back to normal. I know that might not work for people who don't enjoy reading, but for me, it's like a mini-vacation. I'm fortunate in that my husband goes to bed early, which gives me an hour or so to read before I lie down. And I work it in as much as I can during the day, too.