The source of suffering has always been attachment to self-love since time immemorial. In any situation, we place our own needs above everything else; we only think of ourselves — for our own happiness, we destroy the happiness of others; for our own health, we ruin the health of other beings, even take their lives. There is no thought whatsoever of helping or caring for other sentient beings. Because of attachment to self-love, substantial negative karma is committed. The suffering we now feel is just a drop in the ocean of karmic retributions, yet it is already insufferable and difficult to face.

- Quote from Are You Ready For Happiness? Don't Let the Paper Tiger Scare You Off, "How to Face Suffering"