I smoked pot every day for 20+ years and quit four months ago. According to my friends I am a crazy weird cat for being able to just quit pot (alcohol and cigs too). Most of my smoking it turns out was just mindless. I only really miss a couple of tokes, like after a nice dinner when the kids are in bed or, to be honest, first thing in the morning but I don't miss wanting to put the kids to bed just to get baked, or ruining a whole day just for a good buzz in the morning. Compared to quitting drinking pot was easy. I just follow the simple rule--don't do it, otherwise you aren't quitting! I don't think it ruined my life but I certainly wasted some time. It's not in my nature to say that anything "ruined my life".