na prahrsyet priyam prapya
nodvijet prapya capriyam
brahma-vid brahmani sthitah
"A person who neither rejoices upon achieving something pleasant nor laments upon obtaining something unpleasant, who is self-intelligent, who is unbewildered, and who knows atman and God, has stabilized mind in it."
Brahma vid = jeevatman who has attained sama darshan and so is like the Brahman or Paramatman, brahmani sthitha = always thinking of that brahman [here atman], sthira buddhi = unwavering knowledge [ that atman is eternal], asammudha= not thinking about the transient and destructible body. Person who has been guided by teachers about atman's qualities and who always thinks of the greatness of atman, attains atman sakshatkaram. What is the eminence of such a person? Na prahrsyet = not dancing or shouting over the roof out of happiness, priyam prapya = just because he has got something to his liking, no dvijet = nor brooding over or heart broken for, apriyam ca prapya = something he got not to his liking. Because he has had atman sakshatkaram, he is inert to anything happening be it for or against his liking. We can see that this attitude comes to us sometimes. A child likes toy, but after he has grown up same toy will not be liked by him or at least he will be indifferent to it. In cold places we may like warm clothings, but same clothes will be hated in warm places. Our likes changes with time and place. Because the mind has changed. Therefore, likes for worldly matters change. By involving our mind in atman and in God, we can avoid the so called depression, which we very frequently hear. We can steer our mind form transient and changing desires and concentarte on the eternal atman. Atman darshan will make us not to think of anything else.