I think it's good if you can set some sort of a goal for yourself during the jam, something you want to improve on or try out.  Or maybe the goal is just to have fun and enjoy the game dev experience!

For me, I really want to get better with my time management this time around. It seems like I picked the worst time to start doing these jams! But I've always got a lot of stuff going on, so I really need to learn how to work better with the time I do have.