That quality, that insight, that dharma is within us. Once we know it, we will not be able to fall. We must know this. There are not only physical and sensual temptations, but also the temptations of inside hatred, inside bitterness, inside anger, inside rejection. As you go on thinking, the emotions go on increasing.
Bitterness becomes more and more bitter.
Sadness becomes thicker and thicker. Observe your mind when you hold bitterness toward someone. Even when that person is gone, the bitterness remains. The person may not know how you feel toward him, but the bitterness rots inside you, besmears your mind, and pollutes your sweetness. In this way, life becomes heavy.