Happiness and misery are products of the mind and to be able to enjoy life one should cultivate and pursue right resolutions. How this can be done is explained in this book.
Brave, bold men and women, these are what we want. What we want is vigor in the blood, strength in the nerves, iron muscles and nerves of steel, not softening namby-pamby ideas. Avoid all these. Avoid all mystery. There is no mystery in religion.
-Swami Vivekananda