Your mind should be only on the target
In America, Swamiji was watching some boys. They were standing on the bridge trying to shoot at egg-shells that were floating on the river, but they always missed the target.
Swamiji took the gun and aimed at the shells. He fired twelve times and every time he hit an egg-shell.
The boys asked Swamiji: ‘Well Mister, how did you do it?’ Swamiji said ‘ Whatever you are doing, put your whole mind on it. If you are shooting, your mind should be only on the target. Then you will never miss. If you are learning your lessons, think only of the lesson. In my country boys are taught to do this.’