My idea so far (based on inputs from Srila Prabhupad's comments in BG) is that one of the main signs of Krishna consciousness is that one is steady through everything one does, giving it all up to Krishna. Here is one of the relevant verses I could find (there are more that relate to how one should remain steady through happiness and sadness, maybe someone else could pull that up).
5.8, 5.9
naiva kincit karomiti
yukto manyeta tattva-vit
pasyan srnvan sprsanjighrann
asnan gacchan svapan svasan
pralapan visrjan grhnann
unmisan nimisann api
indriyanindriyarthesu
vartanta iti dharayan
TRANSLATION
A person in the divine consciousness, although engaged in seeing, hearing, touching, smelling, eating, moving about, sleeping and breathing, always knows within himself that he actually does nothing at all. Because while speaking, evacuating, receiving, or opening or closing his eyes, he always knows that only the material senses are engaged with their objects and that he is aloof from them.