Does smoking weed cause permanent or relatively long lasting effects on brain chemistry? If one is "addicted", is the change "enhanced"? I've had insomnia for about 4 years... and the frequency of cannabis I consumed in the beginning of this might be seen as linked to this. I might also have an "addictive" personality, or something. I tried not smoking for as long as... well half a year probably, the longest since then. Do I just need to stay off of it for longer? Maybe the cannabis is not really so much linked to it, but I had created a dependency on it, even though it might not even help me if smoked too close to bedtime. It could just be that I consume cannabis the wrong way (ie too much, or in the wrong way) or they could also be "withdrawals", and/or just a condition, or "illness" of my own. People say that marijuana can be mentally "addictive" and changes in brain chemistry can be considered psycho-physiological. Or it could be psycho-somatic as a result of the fusion of cannabis consumed in the wrong way and the "abnormal" personality/psychology or physiology. Either way it can also be considered physical addiction if it could cause such "psycho-physiological" changes. For the "addictive" person, might it help to kind of ween yourself off of marijuana instead of cold turkey? Or just to not smoke as much and completely change your cannabis consumption habits, ie if done all day everyday try once a day, and just enough to get the medical properties active. You could also try the occasional "get totally blasted" method as well but at the right time. Of course don't be focused so much on negative effects that you kind of mistakenly create such negative effects (cuz u know they say don't try too hard you might set yourself up for disaster). Any insight on this would be appreciated.