Instead of just relying on a long-term goal to lose weight/get fit, you may find it's easier to stay in the moment if you have SPECIFIC daily goals.
Try this: Make a list of what you want to accomplish TODAY.
For example - eat fruit with every meal; complete a 30 minute workout; get at least 7,000 steps on your pedometer, etc.
Check off each goal you accomplish. This may help you stay on track in a much more effective way!