Rest is a weapon because it allows your mind to settle! It allows you as a creative person to clear your plate as it were to focus (or refocus) on what is important.
Rest also allows you to create other things as well! It is what I like to call a hard restart–it’s a warning before you get to a point where you cannot create or won’t create. Either option is detrimental to the artist!
Take the time to rest, dear writer. The rest will do you good. I promise.