There is a famous story regarding the Buddha which recounts how He gave a teaching to a sitar player who wanted to study meditation. The musician asked "Should I control my mind or should I completely let it go?" The Buddha answered, "Since you are a musician, tell me how you would tune the strings of your instrument." The musician said "I would make them not too tight and not too loose." "Likewise" said the Buddha, "in your meditation practice you should not impose anything too forcefully on the mind, nor should you let it wander." This is the teaching of letting the mind be in a very open way, of feeling the flow of energy without trying to subdue it and without letting it get out of control, of going with the energy pattern of the mind. This is meditation practice.
Chogyam Trungpa from Cutting Through Spiritual Materialism