Remembering with firm conviction
Constant remembrance of God is, of course, a special feature in spirituality. The method for cultivating constant remembrance is to think with firm conviction during your leisure hours, whether in office or at home, in the street or in the market, that God is pervading all over and everywhere and you are thinking of Him. Try to remain in the same thought as long as you can.
Taken from the book "Complete Works of Ram Chandra, Vol. 1", Chapter "Way to Realisation", pg. 350, by Babuji Maharaj