It’s difficult to make the kind of difference you want to make—in the world, in your immediate sphere, or even in your own life—if you lack the power to do so.

When stated directly, it seems obvious, doesn’t it? Yet, so many people who want to make a difference, or who just want to be effective, shy away from the very idea of power. Quite a few of them are women, but not a hundred percent of them.

What struck me the most during my collaborative group’s follow-up discussion on the subject of power this week was the extent of the mixed feelings that were expressed about being powerful. After listening to the comments and then doing a bit of research, I’ve concluded there’s a widespread tendency to conflate power itself with the use—and especially the misuse and abuse—of power. But power and the use of power are not at all the same thing. So this is likely the result of the unconscious part of the brain (System 1) taking one of its shortcuts, thereby sacrificing accuracy for speed.

Power is like water. Water is essential for life on this planet. A person usually can’t go for longer than three days without water, for example, and annual rainfall is critical for crops. Having enough water to sustain life is good. But tsunamis, tidal waves, floods, and hurricanes are not good. So both too little water and too much water can lead to negative, sometimes devastating, consequences. And when water is coming out of a firehose that’s being used to put out a fire, it’s good. But when water is coming out of a firehose that’s aimed directly at you, it’s bad.

Similarly, power unchecked is often power that’s misused or abused. But power kept too much in check is useless. If you want to be effective, you need to be powerful. In fact, a good working definition of power is: the ability or capacity to act or do something effectively. I can’t imagine there’s anyone reading this who wouldn’t be happy to be more effective.

Besides, powerful people tend not only to be more assertive and confident, but also more optimistic. And they tend to be better at abstract thinking.

If you don’t feel powerful or you’re making a concerted effort to avoid giving the impression of being powerful, you may unwittingly be expressing your powerlessness (which is probably not your intention). That’s because our bodies give us away. Whether subtle or readily apparent, nonverbal communication has a profound effect not just on the person or persons who might be observing us, but also—and most importantly—on us.

Posing for Power

Research by social psychologist Amy Cuddy reveals that sitting or standing in what she calls “low-power” poses can decrease your testosterone level by about 10 percent and increase your cortisol level by about 15 percent. Lower testosterone and higher cortisol will alter the way you feel about yourself—and not in a good way.

On the other hand, sitting or standing in “high-power” poses can increase your testosterone level by about 20 percent and decrease your cortisol level by about 25 percent. In effect, more power = less stress, which makes sense. [Please note that if you’re female, your testosterone level will not rise to the same level of a male. It will increase as a percentage of your own baseline level.]

You don’t have to go out and strut your stuff in front of the world every day. That isn’t even a good idea. What matters is whether or not you perceive yourself to be a powerful (effective) person. And you can increase your self-perception by altering your levels of testosterone and cortisol, which in turn will affect the amount of confidence you have in yourself, which is what others will then perceive.

Pick one of the high-power poses and stand or sit in it for two minutes. That’s it. If you’ve been ambivalent about experiencing and/or expressing power, you may find adopting one of these poses awkward or even uncomfortable. You may think it’s silly. Do it anyway. There are things you want to do in the world and for yourself. You’re up to something. If you want to be effective, if you want to able to translate your intentions into reality, you need to empower, rather than disempower, yourself.