Krishna is Everywhere

Krishna is in everyone's heart, and, in fact, in every atom of the creation. Nothing exists without Krishna. He appears in His expansion as the Supersoul. In this form, He is guiding us in this world giving us intelligence, remembrance, and forgetfulness; and patiently waiting for us to give up our futile endeavour to enjoy the material world.1

The Vedic literatures describe that there are two souls in the heart of every entity: God and the individual soul. This is compared to two birds in a tree; one bird is trying to enjoy the fruits of the tree, while the other is observing.2 When the bird who is trying to enjoy (the individual soul) turns to the observing bird (God), God becomes pleased and sends a spiritual master to the individual soul to guide him on his spiritual path.

Because the conditioned soul is covered with the material energy, he is not capable of perceiving directly the existence and direction of the Supersoul who is situated next to him in the heart; but when the Supersoul sends His external manifestation (the spiritual master) to help the sincere seeker, the soul is able to perceive spiritual reality through the words of the spiritual master. Gradually, as the soul comes to Krishna consciousness, he will be able to perceive Krishna in his heart, as well as in everything around Him.
1. Bhagavad-gita 15.15
2. Svetasvatara Upanisad 4.7