“ A thinker sees his own actions as experiments and questions--as attempts to find out something. Success and failure are for him answers above all. ”
Perform all actions forsaking attachment to the fruits of actions, being indifferent to success and failure. Such mental equanimity is called Yoga
Do not let arrogance go to your head and despair to your heart; do not let compliments go to your head and criticisms to your heart; do not let success go to your head and failure to your heart.
Falling down is not a failure. Failure comes when you stay where you have fallen.
You should learn to think of one thing at a time with all the power of your mind. Your whole attention should be there. Doing things in a lackadaisical way leads to failure and misery.