mano hrdi nirudhya ca
murdhny adhayatmanah pranam
**** To practice yoga as suggested here, one first has to close the doors of all sense enjoyment (withdrawing the senses from the sense objects).In this way the mind focuses on the Supersoul in the heart, and the life force is raised to the top of the head. This practice is not practical in this age. The best process is Krsna (divine) consciousness. If one is always able to fix his mind on Krsna in devotional service, it is very easy for him to remain in an undisturbed transcendental trance, or in samadhi.