He never looks ahead, he never looks back, he lives in the moment. Ours is but to do the task that falls to our lot. Self confidence is that which remains unshaken even amidst disappointment. If I have faith in truth and non violence, I will stick to them even in adversity. We acquire certain habits and then we are unable to do anything different.
Thought is the father of the action.
So guard your deeds and thoughts because when thought goes, action automatically goes with it. It is our duty to keep it under control. No medicine from a Doctor is required for this. It is the voice of God. And undisciplined conscience leads to perdition as the devil speaks through it.