A purified mind where the desires have been thinned away is easier to concentrate on meditation. Sri Krishna talked about how to sit a pure place for meditation, which is free from disturbances. He said that food and work and recreation, all of those have to be balanced. A balanced lifestyle is important for meditation.
Swami Sarvapriyananda teaches Chapter 6 (Verses 20-21) of the Bhagavad Gita. In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).