If we were truly "One with" Godhead, as some propose, then karma would not adhere to us.
Godhead is greater than karma, therefore if we were essentially Godhead ourselves, karma could not touch us, if we did not choose.
But we experience karma, albeit temporarily, so in some degree, then we are seperate and lesser living entities than Godhead. Or /and, we have chosen/agreed to maintain this illusion of seperation eternally, for sake of a dance. acintya bheda abheda tattva
Each living being thinks her/his life and relationships are everything, as indeed they are for that soul, but one can also look and imagine the mind-sets and lives of others, or even of one's own self in a different variety of realms. It could be quite overwhelming, for us as minute beings. Arjuna became overwhelmed with such a vision of the Universal Form, as analogy.
Yet Krsna sees and feels everything everywhere always, and knows exactly what the souls' experience, and then so much more, having seen and experienced