"Remember, whatever you focus upon, increases...When you focus on the things you need, you'll find those needs increasing. If you concentrate your thoughts on what you don't have, you will soon be concentrating on other things that you had forgotten you don't have-and feel worse! If you set your mind on loss, you are more likely to lose...But a grateful perspective brings happiness and abundance into a person's life."
Andy Andrews, Law of Attraction Quotes
My simple version of this quote is to give thanks for what you have and then watch it increase as you attract more of the same.