12
On the Way to Kṛṣṇa
ātma-saṁsthaṁ manaḥ kṛtvā 
    na kiñcid api cintayet 
    yato yato niścalati 
    manaś cañcalam asthiram 
    tatas tato niyamyaitad 
    ātmany eva vaśaṁ nayet
“One should engage oneself in the practice of  yoga  with undeviating determination and faith. One should abandon, without exception, all material desires born of false ego and thus control all the senses on all sides by the mind. Gradually, step by step, with full conviction, one should become situated in trance by means of intelligence, and thus the mind should be fixed on the Self alone and should think of nothing else. From whatever and wherever the mind wanders due to its flickering and unsteady nature, one must certainly withdraw it and bring it back under the control of the Self.”
The mind is always disturbed. It is going sometimes this way and sometimes that way. By  yoga  practice we literally drag the mind to Kṛṣṇa consciousness. The mind strays from Kṛṣṇa consciousness to so many exterior objects because from time immemorial, life after life, that has been our practice. Due to this, there may be great difficulty in the beginning when one tries to fix his mind in Kṛṣṇa consciousness, but these difficulties can all be overcome.
It is because the mind is agitated and not fixed on Kṛṣṇa that it goes from one thought to another. For instance, when we are engaged in work, memories of events that happened ten, twenty, thirty or forty