The answer to happiness is can be found in two words; Appreciation and Gratitude.
Appreciate all that you have, all that surrounds you, down to the tiniest bit.
Be Grateful for all that you have, tangible and non-tangible.
It takes a conscious and persistent intention not easy, but can be done. When Faith is added to the equation you can come through even the darkest of times.
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The impossible is only something that hasn't been done yet.