The spark of jñāna will easily consume all creation as if it were a mountain-heap of cotton. All the crores of worlds being built upon the weak (or no) foundation of the ego, they all topple down when the atomic bomb of jñāna comes down upon them.
(Bhagavān in ‘ Day by Day with Bhagavān’, Afternoon 22-11-1945)
My opinion
So ego is weak. But yet we find it difficult. What is knowledge? You already have the information. Your the atman. Yet ego haunts you. Why? Because you have information not knowledge. Knowledge or Gyana is the experience. Once you have it ego crumbles.The fact you you suffer is enough proof that gyana is not there.