If you lose self-control everything will fall.

When you hurry you're more apt to make mistakes. But you have to be quick. If you're not quick you can't get things done.

If you get too engrossed and involved and concerned in regard to things over which you have no control, it will adversely affect the things over which you have control.

If you stay intent and your ability warrants it, you will eventually reach the top of the mountain.