Nature of A Child
If you train a child in taking shelter of Krishna then that will become nature of child.
Lord Sri Krishna
Lord Sri Krishna is the complete form of all existence, both material and spiritual.
Srimad Bhagavatam 2.4.13,
Srila Prabhupada
Controlling The Senses
He does not like to read anything except topics relating to Krishna; he does not like to eat anything which is not of offered to Krishna; and he does not wish to go anywhere if Krishna is not involved. Therefore, his senses are controlled.
Pleasure of Lord Krishna
Total absorption in playing flute for pleasure of Lord Krishna.