We are creatures of habit; we love a good routine because doing the same old same old doesn't take much mental effort. But getting stuck in certain ways of thinking can hinder our ability to both enjoy and respond effectively to new situations. Like a body, the mind needs regular stretching to stay agile and resilient.

People, by nature, are more or less receptive to new activities and ideas. "Open" types are typically imaginative, creative, intellectually curious, and hold unconventional beliefs compared with "closed" types, who tend to resist change. Although you don't have to have an "open" personality to be mentally healthy, experts say that anecdotally in cases where close-minded people are forced to become more flexible in their approach to the world—by a shattering event, for example—they report that life is richer and more fulfilling as a result. Fortunately, all it takes to keep your mind limber is...

Insight: We each have a book of rules in our head about how we "should" behave—"I've got to be perfect," "Never ask for help," "I always put others ahead of myself." Start trying to pinpoint the rules that drive you, and write them down (we're not saying this is easy, but once you start looking, you may be surprised at what you discover). For each, ask: "Does it serve me and enhance my life? Or is it one I'm following because I'm afraid not to?" If the rule belongs to the latter category, question it. For example, if you "never ask friends for help," why not? Are you afraid that they might reject your request? Or that you'll end up feeling beholden to them? You could be right, so test the rule by asking a good friend for a small favor. You may find that your request is cheerfully granted and that your friendship deepens rather than becomes tense as a result.

Behavior: If a night out usually means dinner and a movie, buy tickets for a flamenco performance instead. Drive the slow, scenic road to work versus the highway. Take a class in a subject that interests you but has nothing to do with your job. When you follow a routine, your brain can operate in low-energy mode, via relatively primitive structures known as the basal ganglia, says Jeffrey Schwartz, MD, co-author of The Mind and the Brain: Neuroplasticity and the Power of Mental Force. In contrast, new activities engage the prefrontal cortex, an evolutionarily younger area that needs more energy to function. That's why breaking a routine may feel hard—but if you push past that effort, Schwartz says, new experiences can help stimulate fresh states of mind that leave you feeling both more focused and energized.

Emotion: The next time you have a bad day, resist the urge to retreat to the TV or an extra glass of wine. Instead, let yourself sense any anger, disappointment, sadness, whatever is going on in you. Write the feelings down, talk about them to a friend, or simply sit with closed eyes and allow them to be (for a meditation exercise, see 5 ways to Break a Downward Spiral). According to personality researchers, the willingness to experience both positive and negative feelings is another factor that distinguishes extremely open people from closed ones; it's also associated with increased longevity after heart problems, according to a recent study at Duke University. On the flip side, denying emotions is a well-known driver of addictions.


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