If you write every day it’s a fix for the day if you don’t write every day it’s a messed up day.
This is absolutely true. Once you build that routine into your life you come to rely on it, so that when you take it out it completely throws your schedule off.
I've tried tying my writing to my exercise routine, which I'm apt to do more regularly. Writing is my meditation/ wind-down part of the routine. Dickens walked a lot and it worked for him, but to each their own. Finding a routine that works for you is just another part of the writing process.