When the true Self is known the jigsaw puzzle of the world gets solved, doubts end, and all misery vanishes. In Atmabodha, a lyric of sixty-eight mellifluous verses, Shankara gives us a lucid analysis of the nature of the Self and explains step by step how it can be realized. Swami Nikhilananda prefaces his delightful English translation with a masterly survey of the Upanishadic view of life.
After every happiness comes misery; they may be far apart or near. The more advanced the soul, the more quickly does one follow the other. What we want is neither happiness nor misery. Both make us forget our true nature; both are chains--one iron, one gold; behind both is the Atman, who knows neither happiness nor misery. These are states, and states must ever change; but the nature of the Atman is bliss, peace, unchanging. We have not to get it, we have it; only wash away the dross and see it.
-Swami Vivekananda