Swami Vivekananda stressed on the positive attitudes of life- love, harmony, service and the like. Some of these concepts find echo in an emerging trend of psychological studies called Positive Psychology. In fact, most of these traits are considered as marks of spiritual wisdom.
Stand up, be bold, and take the blame on your own shoulders. Do not go about throwing mud at others; for all the faults you suffer from, you are the sole and only cause.
-Swami Vivekananda