I wouldn't say addiction as much as something to look foward to. I'll be at work thinking "it'd be nice to light up the hookah when I get home", and once I've gotten home I'll just be too tired or lazy to set it up so I figure "oh well, smoke some other time".
I've also got friends that are addicted to ciggarettes and I know they always say they are going to try and limit thier smoking, but still wind up going through as many as they normally would. And I know I can take breaks from smoking whenever I want/need to. I went 2 weeks without smoking hookah while recovering from surgery only in anticipation for the day the doctor finally said "ok, you can go back to your regular lifestyle again". I wanted hookah, didn't feel the NEED to smoke though.