Acts and consequences
"plastic changes may not necessarily represent a behavioural gain for a given subject." (Pascual-Leone). In addition to being the mechanism for development and learning, plasticity can be "a cause of pathology."
Being aware of a habit and what context is reinforcing it, is the first step to change. When the cues for existing habits are removed, it's easier to create a new routine and form a new behaviour. Sometimes we can’t remove the existing cue but we can learn to change the association with it.