I've dropped all my videogaming hobbies apart from occasional Battlefield matches, and am going to focus on good grades. I did an early GCSE and fucked it up, I'm using it as a lesson to get my act straight and get the right grades. Going for all A's.
Last year (junior year), I slacked off quite a bit, but still managed to maintain my B+ average. This year, I'm taking four AP classes, so I'm planning on kicking my ass into gear.