My experience is that pot is picked up as a crutch, and then likes to stick around to keep helping out. Using it daily as I do seems to relax and then weaken important mental muscle as has been pointed out here. They say it's non-addictive but it's sure as hell habit forming. I want to stop but I'm having a helluva time. I smoke every evening I'm at home. I generally start smoking on the weekends in the early afternoon. I can tell you for a fact it does nothing to help me keep my manic impulses in check. In fact, we all know pot can cause a considerable lack of judgement. Pile that on top of the fuzzy thinking that accompanies mania and the next thing you know I'm indulging in behavior that disgusts me even as I'm doing it. BP is hard enough without weed. I really need to quit.