If you're a night person you can barely get out of bed in time to get to work or get your kids off to school. You're at your most productive and creative much later in the day, and for you, something like getting up early to go for a run is not going to set you up for success because you're not a morning person.

Reading makes me want to write my own books, and just trying to understand what I see in the world around me makes me want to figure things out.

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.

I think self-knowledge is a key to happiness.We can build happy lives only on the foundation of our own natures, our own values, and our own interests.

When I find myself focusing overmuch on the anticipated future happiness of arriving at a certain goal, I remind myself to 'Enjoy now'. If I can enjoy the present, I don't need to count on the happiness that is (or isn't) waiting for me in the future".

Nature is impersonal, awe-inspiring, elegant, eternal. It's geometrically perfect. It's tiny and gigantic. You can travel far to be in a beautiful natural setting, or you can observe it in your backyard - or, in my case, in the trees lining New York City sidewalks, or in the clouds above skyscrapers.

A 'treat' is different from a 'reward', which must be justified or earned. A treat is a small pleasure or indulgence that we give to ourselves just because we want it. Treats give us greater vitality, which boosts self-control, which helps us maintain our healthy habits.