Do you realize you can stop when you have done what needs to be done or you can do just a little more? Why? When it is added on at the end of another effort, it makes a positive difference.
Understand when you stop at what needs to be done, you will usually manage to just live life; however, keep going just a little bit longer. Why? You end up even more fulfilled in the life you have.
Beginning today you can quit when you are done. Yet, you will manage to stay just where you are. Or you can begin to add an extra effort and move steadily ahead in each moment life offers you.