Who's mind is it? There're two possible interpretations of your question, two answers likewise... Your own mind: Just meditate, try to control your urges like anger, envy, sex. Some breathing...
Sir Rebral is tossing rocks around with his telekinetic power. Jump up close to him when he does this and the rock will hit him instead. Then he will begin pulling up chunks of the ground to hit you....
The power of the mind can mean a couple of things. One of them is the 6th sense, the ability to perceive things others cannot normally perceive. Another thing it could be is " mind over matter" Which...