Nike has a very good commercial that shows athletes working out and everywhere they look they see "1 more rep." All of these athletes are pushing themselves to go above and beyond their comfort zone in whatever activity they are participating in to get better. They are training with purpose.
This is where you should insert yourself and ask what purpose am I training for? Do you have a weight loss goal, a race or event coming up, or simply to get better every day? There is a difference between exercise and training with a purpose and plan. Goals, as well as commitment to those will be short lived if you are just exercising. Commit to your goals and train with purpose.
A quote that I refer back to for motivation states:
A RIVER CUTS THROUGH ROCK NOT BECAUSE OF ITS POWER, BUT BECAUSE OF IT PERSISTENCE - Jim Watkins
This quote typifies the mindset you have to acquire when it comes to setting and obtaining health and fitness goals. If you are looking for short term solutions you will end up with long term failure. In this game, patience and persistence pay off.