Great share @Chbartist. Indeed, only a contented person can be graetful. Gratefulness stems from a heart that is satisfied for each level of life, provision, ability, strength, success and even challenges. Gratefulness builds an energy and opens up the eyes to more value of life and living.
I've tasted both aspects of life - ungratefulness and gratefulness and I think life is better and fairer with the gratefuls.