What we can learn from toddlers about well-being

Try positive self-talk.

Young children tend to coach themselves out loud, a practice known as private speech (such as this popular clip from a 4-year-old snowboarder).

Toddlers aren't shy about self-talk, Dr. Merali said, and you shouldn't be, either. Research suggests that for adults, positive self-talk can help with problem-solving, learning, confidence and managing your emotions.

Take any opportunity to move.

Two-year-olds are active for almost five hours a day, according to a review of 24 studies. They move joyfully and instinctively, Dr. Merali said.

Adults can look for ways to move more, even if it's just for ...