Krishna now describes the devotee's outer equanimity — the way they move through the world. Enemy or friend — equal. Honor or insult — equal. Cold or heat, pleasure or pain — equal. And underneath it all: freedom from attachment.
This is not the numbness of someone who has stopped caring. This is the maturity of a person who has seen enough of life's swings to know that none of them last. A grandfather who has weathered decades of ups and downs does not react to praise the way a young man does, nor does he collapse under criticism. He has passed through both so many times that his center of gravity has settled somewhere deeper than the surface.