Confidence is like the fertile soil. As the foundation of all that is, it increases the amount of what is wholesome and healthy. It is like a boat crossing the river of fiction. It is like an escort protecting against spiritual death and emotional assault. It is like a vehicle travelling to the land of freedom. It is like the king of all jewels, making whatever one intends to come true. It is like a hero, crushing evil. It is the most precious hoard amongst the worthwhile accumulations. 

-- Longchenpa