Xorkoth
Bluelight Crew
For me it's about two things. First of all, I need to stay not high for the majority of my time. I generally smoke every day (not religiously or anything, it just happens that way), but I do it in the evenings, or for a specific purpose. Secondly, as long as I have something to do/apply myself to (music being the best example, or socializing with friends, or hiking, etc), I do not feel demotivated; in fact, quite the opposite. If I sit around smoking weed and watching TV, I get really apathetic, cloudy and demotivated.