How to Tackle a Bad Habit

Bad habits interrupt your life and prevent you from accomplishing your goals. They jeopardize your health — both mentally and physically. And they waste your time and energy.
So why do we still do them? And most importantly, is there anything you can do about it?
I've previously written about the science of how habits start, so now let's focus on the practice of making changes in the real world. How can you delete your bad behaviors and stick to good ones instead?
I certainly don't have all of the answers, but keep reading and I'll share what I've learned about how to break a bad habit.

What causes bad habits?

Most of your bad habits are caused by two things…
Stress and boredom.
Most of the time, bad habits are simply a way of dealing with stress and boredom. Everything from biting your nails to overspending on a shopping spree to drinking every weekend to wasting time on the internet can be a simple response to stress and boredom.
But it doesn't have to be that way. You can teach yourself new and healthy ways to deal with stress and boredom, which you can then substitute in place of your bad habits.
Of course, sometimes the stress or boredom that is on the surface is actually caused by deeper issues. These issues can be tough to think about, but if you're serious about making changes then you have to be honest with yourself.
Are there certain beliefs or reasons that are behind the bad habits? Is there something deeper — a fear, an event, or a limiting belief — that is causing you to hold on to something that is bad for you?
Recognizing the causes of your bad habits is crucial to overcoming them.

You don't eliminate a bad habit, you replace it.

All of the habits that you have right now — good or bad — are in your life for a reason. In some way, these behaviors provide a benefit to you, even if they are bad for you in other ways.
Sometimes the benefit is biological like it is with smoking or drugs. Sometimes it's emotional like it is when you stay in a relationship that is bad for you. And in many cases, your bad habit is a simple way to cope with stress. For example, biting your nails, pulling your hair, tapping your foot, or clenching your jaw.
These “benefits” or reasons extend to smaller bad habits as well.