I was not talented enough to run and smile at the same time

If I can get better, why not?

If one can stick to the training throughout the many long years, then will power is no longer a problem. It's raining? That doesn't matter. I am tired? That's besides the point. It's simply that I just have to.

To boast of a performance which I cannot beat is merely stupid vanity. And if I can beat it that means there is nothing special about it. What has passed is already finished with. What I find more interesting is what is still to come.

Try for a goal that's reasonable, then gradually raise it.

When a person trains once, nothing happens. When a person forces himself to do a thing a hundred or a thousand times, then he certainly has developed in more ways than physical. Is it raining? That doesn't matter. Am I tired? That doesn't matter either. Then willpower will be no problem.

You can't climb up to the second floor without a ladder. When you set your aim too high and don't fulfill it, then your enthusiasm turns to bitterness. Try for a goal that's reasonable, and then gradually raise it.