From Melanie Greenberg’s article on PsychologyToday.com .

1.  “Let us be grateful to people who make us happy; they are the charming gardeners who make our souls blossom.”  — Marcel Proust

     

2. “We can only be said to be alive in those moments when our hearts are conscious of our treasures.”   — Thornton Wilder

     

3. “As we express our gratitude, we must never forget that the highest appreciation is not to utter words, but to live by them.”  — John F. Kennedy 

     

4. “At times our own light goes out and is rekindled by a spark from another person. Each of us has cause to think with deep gratitude of those who have lighted the flame within us.”  — Albert Schweitzer 

     

5. “The deepest craving of human  nature  is the need to be appreciated.”   — William James

     

6. “Be thankful for what you have; you’ll end up having more. If you concentrate on what you don’t have, you will never, ever have enough.”  — Oprah Winfrey

     

7. “He is a  wise  man who does not grieve for the things which he has not, but rejoices for those which he has.”  — Epictetus