How about not blaming your fucking problems on weed? Realize that if you chose to smoke in the first place, any negative effects it may have, directly or indirectly would be YOUR fault, not weed. If you can't smoke weed and still do what you need to get done, its your fault. Weed shouldn't be an excuse. It could be a good idea to cut back, but rather than dropping it all together maybe you should learn to be responsible and control yourself. Thats why I hate AA (Alcohol Anonymous), if you quit something forever it shows no will power or anything. The substance that controlled you still controls you because you have to avoid it, rather than being able to casually use it. So rather than quitting weed because you need to get your grades back up, then you should keep it to 1-2 times a weekend if needed, or just take a short break, then start to use it RESPONSIBLY.