Bhagavad Gita Chapter 8
immerse yourself in god
So why not think about God? We feel thinking about God does not give us any immediate results.
But be very clear, when we are completely immersed in thoughts of God, our inner space is purified and transforms into the space of completion. Completion is God! We are preparing our Self. At the time of death, these thoughts will liberate us. Constantly thinking about God enriches us when our soul passes through the energy layers at the time of death.