Yoga as Body and Mind Control
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in Krṣṇa consciousness. Being always engaged in some activity connected with Krṣṇa is actual  samādhi . It is not that when one is in  samādhi  he doesn't eat, work, sleep or enjoy himself in any way. Rather,  samādhi  can be defined as executing regulated activities while absorbed in the thought of Krṣṇa.
asaṁyatātmanā yogo duṣprāpa iti me matiḥ vaśyātmanā tu yatatā śakyo ’vāptum upāyataḥ
“For one whose mind is unbridled,” Kṛṣṇa further says, “self-realization is difficult work.” (Bg.6.36) Anyone knows that an unbridled horse is dangerous to ride. He can go in any direction at any speed, and his rider is likely to come to some harm. Insofar as the mind is unbridled, Kṛṣṇa agrees with Arjuna that the  yoga  system is very difficult work indeed. “But,” Kṛṣṇa adds, “he whose mind is controlled and strives by right means is assured of success. That is My judgement.” (Bg. 6.36) What is meant by “strives by right means”? One has to try to follow the four basic regulative principles as mentioned and execute his activities absorbed in Kṛṣṇa consciousness.
If one wants to engage in  yoga  at home, then he has to make certain that his other engagements are moderate. He cannot spend long hours of the day working hard to simply earn a livelihood. One should work very moderately, eat very moderately, gratify his senses very moderately and keep his life as free from anxiety as possible. In this way practice of  yoga  may be successful.