I smoked literally everyday my junior and senior year in college. I think I pretty much just got sick of being high all the time and when I moved away from fellow smokers, I just decided not to hook back up with any pot smokers. I didn't have any withdrawals that I noticed. When I looked back on it, I can see that when I was high I was having numerous little mishaps and accidents even in the morning before I smoked any pot. They weren't anything major but just things that happened from not paying enough attention to what I was doing. Like staring at the rain outside the window while cutting a bagel.
Aynway, I went cold turkey, smoked 2-3 times in the several years since but haven't suffered any withdrawals.