The act of writing moves these things out of my head, where they take up space in my subconscious, and makes them tangible and coherent. These lists are a part of my self-care routine—a routine I adopted when I suffered from a particularly nasty bout of depression in college. I use this ritual today, and I do other things too: I eat three meals every day; I get enough sleep at night; I read to relax; I take my medications; I clean my room; I listen to music or to podcasts; I call my friends; I sleep some more.
Here's another list: four authors who write about their experiences with anxiety, its roots and its bedfellows.