One of the most important lessons of childhood is discovering what you like to do.

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."

Getting control of stuff makes people feel like they have more control over their lives - maybe irrationally, but it's one of these psychological truths.

Happiness can seem like an abstract, transcendent notion, but in fact, I found that getting enough sleep (very important!!), getting exercise, not letting myself get too hungry, not letting myself get too cold (I'm a person who is always cold), made a big difference. Partly because I felt happier, partly because feeling physically comfortable makes it easier to keep other difficult happiness-boosting resolutions like biting my tongue.

One of the findings that really interests me is that, although we think we ACT because of the way we FEEL, we often FEEL because of the way we ACT. So an almost uncanny way to change your feelings is to act the way you WISH you felt.

The number one resolution that people mention to me as something that's made them happier is - to my surprise - making the bed.

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.