Allegorically, metaphorically Lord Krishna is spirit soul atman existing in human body. To reach Krishna within we had to indulge in spirituality detailed in Bhagavad Gita.
Spirituality as per Bhagavad Gita demands practicing truthfulness 100%. We should also be well versed in contemplation (art of chintan) so that we could reach the hidden underlying meanings of sacred texts contained in scriptures of different religions of world.
From six years of age I indulged with Lord Krishna and his teachings. My belief in Lord Krishna was so much that if God Almighty himself came disguised to dissuade me from my belief in Lord Krishna I would have not.
Remaining truthful all the time I could distinctly hear promptings of soul atman, promptings of Lord Krishna from within all the time. Guided by voice of soul atman, Lord Krishna from within I completed my spiritual journey 37 years of age.
Lord Krishna all the time existed with us but we failed to recognize his presence. This happened due to presence of ego in the body. At any given moment of life either one could dominate. I never let my ego dominate, rather I dismantled, dismembered my ego in totality.
To interact with Lord Krishna within our belief in God, belief in world of souls’ atmans must be absolute. Furthermore practicing truthfulness all the time, we get easily reach Lord Krishna within.