Those who work at a thing heart and soul not only achieve success in it but through their absorption in that they also realize the supreme truth-Brahman. Those who work at a thing with their whole heart receive help from God.
"You Believe In A Book That Has Talking Animals, Wizards, Witches, Demons, Sticks Turning Into Snakes, Burning Bushes, Food Falling From The Sky, People Walking On Water, And All Sorts Of Magical, Absurd And Primitive Stories, And You Say That We Are The Ones That Need Help?"
When you know both yourself as well as your competition, you are never in danger. To know yourself and not others, gives you half a chance of winning. Knowing neither yourself or your competition puts you in a position to lose.