I’ll just add that once I got over being depressed about violating #4 from time to time, I was able to write more frequently. I tell people I write every day, and maybe when I’m drafting a new novel, I do. (I have to, or at least not skip more than a day.) Otherwise, maybe 9 of 10 days, or 19 of 20. Breaks are good once in a while, but before I started taking them, I would work myself to mental exhaustion, collapse for a day or three (sometimes metaphorically, sometimes not), and then struggle with being depressed and disappointed that I skipped a few writing days that I would skip a few more.