Routines are more important than fears. They are an unconscious mechanism for quelling anxiety. They shut the mind up through automation.
The problem with routines though is that they become stale over time. The mind seeks continued stimulation. Maintaining excitement is the key to building a successful habit. So we mix up the workouts. We write about something different. We take a different route to work.
Even the slightest change prevents us from falling asleep to the predictability of reality.