The Tao Te Ching, an ancient Chinese book of life, can teach much about the path of emotional freedom and balanced joy. It is cryptic though, to the uninitiated.
It would be a good idea to read The Tao and with a commentary on it, such as Wayne Dyer’s, Change Your Life: Living the Wisdom of the Tao
Or Tao: The Watercourse Way by Alan Watts.
In the long run, all the great spiritual teachings lead to the way of inner peace.