I don't know if i recall this part of the Mahâbhârata the tale of the hero Arjuna who is on the battle field, he sees his realtives on the other side and wimps out Lord Krsna has manifested himself as his charioteer and basically gives him a pep talk to be a man and to do his duty which he does.
Many people use this tale to have confidence to go forward in difficult tasks. a