Bad habits are often some kind of addiction. I frankly say that the only one way to get rid of these bad habits is to stop doing it. Believe me, there is no magic word or trendy plan what could help you to overcome your bad habits.  

Why the bad habits and addictions are bad for your life ?

These habits are often unhealthy. Do you know that a single cigarette could take 14 minutes of your life ?

Check this link for more information

They are not just unhealthy but also take your time and didn't make any benefit.

Just think about PC gaming what leeches your time.

Mini Szótár:

Addiction - függés
Bad habit - rossz szokás
to get rid of - megszabadulni
Benefit - haszon,juttatás,ellátás