I find schedules and list help me. Especially when I am loaded down with classes. I made a list of things that need to get accomplished in a given week and did that and checked it off.

As far as the gaming addiction i'm not sure. I used to play a lot of video games, but I kinda lost interest in playing them all the time. I think video games give you an escape. You get caught up in the story, talking friends if you play online with people. It makes your forgot that things kinda suck for you at the moment. At least that was my experience sometimes. It might be different for you though.