EYAN, PROFOUND PONDERING

It gives you an automatic response to react to your cravings and makes it easier to replace a bad habit with a good one: 

• Identify the scenario that usually triggers your bad habit.
• Specify a different response to the trigger. Ideally, this should be a good habit ...

Bad habits, those you would want to go away, are best eliminated by replacing them with something else.

The only thing that can be replaced in a habit cycle of Trigger, Action and Rewards is the Action, which is always a choice. Replacing the action makes us trick ourselve...

All of the habits that you have right now — good or bad — are in your life because they provide a benefit to you, even if they are bad for you in other ways.

And because bad habits provide some type of benefit in your life, it's very difficult to simply eliminate them.