Turns out that people who try new things, go new places, learn new skills, etc. are happier. This can be tough, because novelty and challenge also bring frustration and irritation - but if you can push through that, novelty and challenge can bring enormous happiness rewards.

I always had the uncomfortable feeling that if I wasn't sitting in front of a computer typing, I was wasting my time - but I pushed myself to take a wider view of what was "productive." Time spent with my family and friends was never wasted.

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.

Now that I've relinquished my fantasies of all the people I wish I could be, and stopped feeling guilty about not going to the opera or pretending that I want to attend a foreign policy lecture, I have more time for the things that I truly enjoy.

We need to have intimate, enduring bonds; we need to be able to confide; we need to feel that we belong; we need to be able to get support, and just as important for happiness, to give support. We need many kinds of relationships; for one thing, we need friends.

One of my Secrets of Adulthood is: Most decisions don't require extensive research.

Say “no” only when it really matters. Wear a bright red shirt with bright orange shorts? Sure. Put water in the toy tea set? Okay. Sleep with your head at the foot of the bed? Fine. Samuel Johnson said, “All severity that does not tend to increase good, or prevent evil, is idle."