In this brief episode, Dr. Shaw focuses on the simple human aspect of habitual behavior.  She postulates that old habits are not necessarily tough to break because you actually never do kill them entirely... they can and do live side by side with new habits.   The key to this, which has an educational application, is GUIDED PRACTICE, or doing something not alone.   Dr. Shaw uses starting an exercise regimen as an example of creating a new habit or rhythm in live that doesn't necessarily kill or replace or change the old habit.   To have progress or re-training with any new habit involves the training and development of a muscle (literally or figuratively), but that training, again, doesn't supplant an old pattern.  What you don't want is "fighting" within yourself when conflicting habits or patters co-exist.... that's draining and is filled with negative energy.  Again, Guided Practice creates the result you desire.