Try to reward yourself. Before make yourself something or buy something after your done. and DON'T stop in till you are. like get a ice cream cone at McDonalds after your done. or maybe get a Jolly Rancher or something you can suck on while you clean up. Play MUsic even. =[)
just try to set a timer as long as you want and then try clean your room before it goes off and if it goes off set it again .... have fun at a race against time
Start small. If there's heaps to do, just say you'll do 3 things
eg pick up clothes of the floor dust vacuum
Then ask yourself what you want to do next and decide when. Don't spend too much time being picky or you'll get turned off doing it next time. Most procrastinators are perfectionists. Just do it. I'm timing you!!!