Another way that people tend to become unmotivated when trying to lose weight is that they get discouraged when the results start slowing down. Maybe you lost five pounds in the first and second month and then you started only losing half a pound in months after that. It is more common than not for this to happen and it is unrealistic to expect steady weight loss after a certain point in time.
Today, consider whether you have achieved your goals quickly or slowly. Have you seen tremendous results very quickly either with this program or in the past? Prepare yourself for those results to slow down - not because you are working less to achieve those goals, but rather because your body cannot reproduce those results at the same rate as time continues. We must be realistic in order to not be discouraged.