From the speeches of Sun Myung Moon and Hak Ja Han
When you receive something that Heaven does not want to give you, you must accept it with the thought that you will repay tenfold what you received. And what Heaven wanted to give us, we must accept with the thought that we will pass it on to our descendants for many generations to come.
When you live with a grateful heart, everything around you looks beautiful. It makes you happy. Then you can't keep it to yourself and share your happiness with others.
When any difficulty comes upon you, you should rejoice and be thankful.