First figure out whether your are more visual or auditory. If you are visual a pack of rainbow markers will help you visualize you notes when you need to recall them...it also doesn't hurt to doodle out an image that you need to trigger a particular note. Even doing math problems in color is more fun. If you are auditory reading aloud might help I used to make tapes(this dates me, maybe you can make a digital recording) anyway I would turn on the tape at night to listen while falling asleep. You just need to make things less boring.