Today is Thanksgiving in the United States.
When I was growing up, my mother used to tell me, "David, be sure to thank people when they do something nice for you. Show them you're thankful and they'll want to do it again."
You guys with employees (or spouses) know this. When you show people appreciation for something, they'll do more of it.
Same is true for the universe in general. When you appreciate what you have, more of that follows. Earl Nightingale said, "You become what you think about." And you get what you think about also.
I believe in the concept so much that I wrote a book on gratitude. If you can relate to what I'm saying here, and want more detailed thoughts on the subject, you may want to check it out.