My motto in life is 'How can I live today with more gratitude than yesterday?' I have tried to live a life in which I am more grateful today than I was yesterday, and in which I will be even more grateful tomorrow than I am today. It has been my life's goal to have gratitude in my heart every day. Right before True Father left for Danbury, he said, 'Please never complain. You should be grateful for the position you have been placed in, for when you become completely one through your gratitude, great miracles can take place.'
Source
S. 1560 Gratitude Nr. 1