I think there's a distinction to be made in regards to how much of an individual's routine is conscious.
For example, I try to live religiously by my consciously planned schedule. It's written out on a whiteboard to the side of me right now. But when my discipline fails I fall into a unconscious, unplanned routine of video games, Netflix, and streams. Both are routines, both are comfortable, but the former is productive and challenging whilst the latter is 'killer'.