Again people often ask how the mind is controlled.

I say to them: “Show me the mind and then you will know what to do”. The fact is that the mind is only a bundle of thoughts. How can you extinguish it by the thought of doing so or by a desire? Your thoughts and desires are part and parcel of the mind. The mind is simply fattened by new thoughts rising up. Therefore it is foolish to attempt to kill the mind by means of the mind. The only way of doing it is to find its source and hold on to it. The mind will then fade away of its own accord.”

Ramana Maharshi