How do I cope with grumpiness?

Some days, I get grumpy. I oversleep and wake up late feeling tired in the morning and then feel like that most of my day is gone. I had a rough night. I feel like we've had too much vacation which gives me a headache. I don't know what to do to have fun anymore. I play Nintendo Gamecube Pokemon Colosseum but I still feel like I am trapped inside my room all day or all night even on the computer. Please help me.