The person who has given up worldly attachments from his mind and who is beyond the pairs of opposites and is also free from desires to such a person any experience, coming as a matter of course, does not cause either pleasure or pain.
The changes and modifications in the forms of existence and destruction are the basic nature of things. The person, who has realized this, easily enjoys Peace and Calmness. He is no more disturbed and worried. He becomes free from sufferings.
To realize God, the meditation on Om is the best technique and path. This is the highest technique. Having realized this Brahmam as Om (Aum) by this support and techniques on attains Brahmam and become one with it.
When the Prana (Life Energy) is sleeping and dormant, when the senses and sense organs are dormant and sleeping, the pure, effulgent, glorious Supreme Being, who has created the Creation imposed the Law of Karma or the Cosmic Law, keeps awake.