.I've found one of the best motivator ever! The Nike Fuel band. So far it's motivated me run and lift weights every day since I bought it last week. I'm also taking the long way every time I need to walk somewhere to get extra points. Not only does it motivate me to reach my goal every day, but I'm also competing with friends which helps even more.
Nike Fuel band measure all your activities and shows calories burnt, steps taken, fuel points earned etc. I love that is has a watch too, so that I don't have to wear the band and my watch.