(“Quarryman” by Gustave Courbet)
When nothing seems to help, I go and look at a stonecutter hammering away at his rock perhaps a hundred times without as much as a crack showing in it. Yet at the hundred and first blow it will split in two, and I know it was not that blow that did it, but all that had gone before.
It's one of my favourite quotes and it has helped me on several occasions.
The composition counts exactly 101 hits on the snare drum, with the 101st corresponding to the climax, the hammer hitting the rock one last time and breaking it.