This is a talk on the theme of the joy of seclusion, followed immediately by a guided meditation on concentration using the breath as the focus. A concentrated mind is a happy mind. Joy, rapture, happiness, pleasure, sublime bliss, peacefulness, and equanimity are intrinsic to concentrated states. This brief talk introduces the four states of concentrated absorption known as the four jhanas and the immaterial states of infinite space, infinite consciousness, the base of nothingness or emptiness, and the base of neither-perception-nor-non-perception. In Buddhism, not only is the rapture and pleasure of attaining jhana a form of happiness, but the deep ease and equanimity of the immaterial states are considered to be refined forms of happiness.