“One swallow does not make a summer, neither does one fine day; similarly one day or brief time of happiness does not make a person entirely happy.”

Aristotle

Lighten up, Aristotle! You sound like a man scorned. Happiness is merely the extension and action of contentment. Contentment allows for happiness to overwhelm us, no matter how briefly. We should strive for a life of contentment, where are emotions and subsequent behaviors are fully realized and acknowledged.