Gretchen Rubin said this quote

The First Splendid Truth: To be happy, I need to think about feeling good, feeling bad, and feeling right, in an atmosphere of growth.

~ Gretchen Rubin

... one flaw throws the loveliness of [everything else] into focus. I remember reading that Shakers deliberately introduced a mistake into the things they made, to show that man shouldn't aspire to the perfection of God. Flawed can be more perfect than perfection.

~ Gretchen Rubin

The belief that unhappiness is selfless and happiness is selfish is misguided. It's more selfless to act happy. It takes energy, generosity, and discipline to be unfailingly lighthearted, yet everyone takes the happy person for granted. No one is careful of his feelings or tries to keep his spirits high. He seems self-sufficient; he becomes a cushion for others. And because happiness seems unforced, that person usually gets no credit.

~ Gretchen Rubin

Laughter is more than just a pleasurable activity...When people laugh together, they tend to talk and touch more and to make eye contact more frequently.

~ Gretchen Rubin