Gretchen Rubin

No leader did more for his country than Winston Churchill. Brave, magnanimous, traditional, he was like a king-general from Britain's heroic past. His gigantic qualities set him apart from ordinary humanity; there seemed no danger he feared, no effort too great for his limitless energies.

As goofy as it sounds, I try to sing in the morning. It's hard both to sing and to maintain a grouchy mood, and it sets a happy tone for everyone - particularly in my case, because I'm tone deaf, and my audience finds my singing a source of great hilarity.

I always feel calmer when I exercise. In fact, that's probably the main reason I exercise.

In 'Before and After,' I identify the sixteen strategies that we can use to make or break our habits. Some are quite familiar, such as 'Monitoring,' 'Scheduling,' and 'Convenience.' Some took me a lot of effort to identify, such as 'Thinking,' 'Identity,' and 'Clarity.'

One of my most important 'Secrets of Adulthood': Outer order contributes to inner calm.

Kennedy was president for only 1,037 days, but during his short tenure, he achieved much. At the Cold War's most dangerous hour, he preserved the peace. He improved relations with the Soviet Union and replaced tension over Berlin with a limited test ban treaty.

I love finding - or inventing - ways to categorize people.

In the scope of a happy life, a messy desk or an overstuffed coat closet is a trivial thing, yet I find - and I hear from other people that they agree - that getting rid of clutter gives a disproportionate boost to happiness.

Like most people, I have several pet subjects - that may or may not be interesting to other people. Don't get me started on happiness, or habits, or children's literature, or Winston Churchill, unless you really want to talk about it.

Embrace good smells. No cost, no calories, no energy, no time - a quick hit of pleasure.

When I became obsessed with Winston Churchill, I wrote a book about Churchill. What a joy it was to write that book!

Skillful conversationalists can explore disagreements and make points in ways that feel constructive and positive rather than combative or corrective.