Ajahn Buddhadasa, a colleague of Ajahn Chah, made a point of directing his students to look for nirvana in the simplest ways, in everyday moments. “Nirvana,” he would say, “is the coolness of letting go, the inherent delight of experience when there is no grasping or resistance to life. It is always available. Anyone can see that if grasping and aversion were with us day and night without ceasing, who could ever stand them? Instead we survive because there are natural periods of coolness, of wholeness and ease…In fact, they last longer than the fires of our grasping and fear. It is this that sustains us. We have periods of rest making us refreshed and well. Why don’t we feel thankful for this everyday nirvana?” 

Jack Kornfield, The Wise Heart, Buddhist Psychology for the West.