Yes, i do believe one can. I am currently struggling with a psychological addiction to the tasty green herb. I started smoking when i was 10, shortly after my father died. Its been 16 years later and i have become very dependent on smoking pot. I smoke several times a day, when i only smoke once a day i get a little bit uncomfortable. In that 16 years, i think i quit twice (just to get a job).. It is a strong psychological addiction that I find myself with here. Not saying that i want to quit now... but maybe down the road? (maybe)