Question: My mind wanders and I would like to know how I can better my concentration so that I can keep my mind focussed on one point or on one thought without lower thought-structures wandering around.Sri Chinmoy: Before you actually start your concentration, I wish you to repeat the name of God at least twenty times as fast as possible. "God, God, God …" In one breath, please try to repeat the word "God" as many times as you can. First try to purify your breath by repeating God's name. The breath has to be purified. Unless and until our breath is purified, our mind will wander; thoughts will attack the mind mercilessly. After you have repeated God's name, I wish you to focus all your attention on a particular picture. You are a university student and at the same time you are a disciple of mine. You can focus your attention on my picture or look at your own picture. Look at your reflection in the mirror. Do not feel that you are experiencing two bodies with one consciousness, but feel that you are feeling one body with one consciousness, even though the body in the mirror is a reflection of yourself. There should be no other thought besides this one, "God wants me; I need God. He will illumine me, my life; I shall fulfil Him, His mission." Then you will see that slowly and steadily God's divine thoughts are entering into you and permeating your whole inner and outer existence.
Sri Chinmoy, Earth’s cry meets Heaven’s smile, part 1, Agni Press, 1974