New Delhi, March 9 -- Ray Dalio, the billionaire hedge fund manager and founder-chairman of Bridgewater Associates LP believes that integrity is important for professional and personal happiness and fulfilment. The ace investor believes that people without integrity "lose touch with their own values" and thus find it difficult to be happy, and "almost impossible to be their best".

The American billionaire investor is known for active engagement on social media, where over the years he has shared a number of his principles, life lessons and other investing gems with followers. Some of his advice includes how to build an all-weather portfolio that can balance risk in amid a volatile equity market; and why difficulties and failures are grea...