Amazing how there’s entire websites devoted to the elusive concept of, “happiness”. At Successories, one of our bestsellers was an Abraham Lincoln quote which for me personally has always summed it up succinctly:  

“People are just as happy as they make up their minds to be.”

Then earlier today I read this one by Ralph Waldo Emerson:

“Finish each day and be done with it. You have done what you could. Some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day. You shall begin it serenely and with too high a spirit to be encumbered with your old nonsense.”