a compulsive habit that people obtain through repitition.

If you do anything more times than a frat boy says the word bro a day.

A conscious (and unconscious) action characterized by repetition and obsession. It is possible to become addicted to basically anything, sometimes the tendency may be rewarding but often it is problematic and self-destructive; nevertheless, a feeling of satisfaction is achieved.

A disease of the mind characterized by compulsive repetitive behavior without regard for the consequences to ones life. There's more information about addiction and addiction treatment here: www.wmrehab.com

Safely saying that you can quit something, as long as it is on next tuesday.

A habit that you can't quit.

some examples:
drugs,pokemon,yugioh,hookers,and nintendo

to physically or mentally need something