If you keep in touch with God with faith and love, then God is within yourself, He'll give you intelligence how you can go back to home, back to Godhead. There are many different processes or yoga system to be in touch with God, but for the people in this age, this is the easiest method, to be in touch with God simply by chanting His holy name.
Lecture on Bhagavad-gita 2.13, Hamburg, September 10, 1969