how to quit smoking weed

Is it possible that someone who is addicted to quit smoking pot cold turkey?
Could someone who has an addiction problem to weed out without going into rehabilitation, or support groups? I have a friend who has to stop, but do not want detoxification. He smokes a long time. I have read in some websites that the best way to weed abstein for a long period of time, means entering a rehab clinic. That means it is almost impossible cold for him to stop, then?
Yes We – me first say that there is some misinformation here. Marijuana is actually an addiction for 15% population. And addiciton "not all in your head." It has been known for some time the specific participation physical changes in the brain. That said, I had friends who were drunk and said they were jonesing to stop the weeds from their own, so it is certainly possible. The obvious solution is to deal first and if that fails, consider rehabilitation. In addition, your friend should not neglect other sources of help, as groups of outpatients and 12 programs step. It is possible that these provide much of the same benefits that rehabilitation without the expense, inconvenience and possible discomfort.
Nick Spears – Stand Up Comedy – “I Quit Smoking”