I once was in conference with a famous writer. (It was E. L. Doctorow.) The first thing he asked me was, "Do you write every day?"
I said, "No. I have to work."
His manner changed. I understood that my answer had disqualified me in some fashion; that it proved I was not truly committed, and had no future in the big leagues. The rest of the conference was perfunctory.
I didn't think it was a rude question at the time. I had read, over and over, that some writers were "too lazy" or "not disciplined" if they did not get up two hours earlier in the morning or use their after-work time to write. I tried those things, for about three days each, and couldn't see straight, much less think straight.
"Do you write every day?" E. L. Doctorow is a fine writer. But that question proved he was not a teacher.
Maybe writers who do nothing else can and should write every day, but writers with responsibilities other than writing can get too burnt-out. Tired. Depleted. And if you feel that way -- you are exactly what you feel like!
The following coping idea came from a writer with a full-time job. She tried writing in the evenings, but at best put in a spotty half-hour. The results were not worth her efforts. Weekends had to be spent on housework and errands. So she told herself:
Okay, no writing Monday through Friday. Period. You are not to go near pen and paper on those days. Writing is permitted on the weekends only -- and then only if you feel like it.
The first week she rejoiced in her freedom from the mental burden of "writing every day."
By Friday night of the second week she could hardly wait to get to her computer. She did her housework and schlepping on weeknights, didn't short herself on sleep, and on Saturday and Sunday, rested, she got good chunks of time to sit down and write. She's a real writer.