The initial word happiness is the society meaning. To serve and be happy with it. Very communistic. Happyness is the real "happy". To serve oneself and be secure with all actions and reactions of occurrence.
True Happyness comes from the heart of oneself, not the approval of others. Approval of others is only happiness.
late 14c., "lucky, favored by fortune, being in advantageous circumstances, prosperous;" of events, "turning out well," from hap (n.) "chance, fortune" + -y (2). Sense of "very glad" first recorded late 14c. Meaning "greatly pleased and content" is from 1520s. Old English had eadig (from ead "wealth, riches") and gesælig, which has become silly. Old English bliðe "happy" survives as blithe. From Greek to Irish, a great majority of the European words for "happy" at first meant "lucky." An exception is Welsh, where the word used first meant "wise."