When noticing your actions or thoughts are caught in a mindless routine acknowledge the recognition with a smile and change it in that moment. Turn it upside down or inside out, but change it. Change it at least momentarily.
Create a list of your most obvious routines and habits as a first start on the road to being aware of them and changing them. Routines are neither good nor bad, they just cloud our view of what's going on each moment, they numb us to current reality.