Last updated: Jun 25, 2008

How many times have you said, “There just arent enough hours in the day”? Its true: Time is finite, and you cant stop the clock. But you can rethink how you expend your energy, which is limitless. First, you have to figure out if youre spending it wisely. (Replaying bad news on the TV or fuming over something a friend said can waste energy—even volunteering can exhaust you spiritually.) Enter Tony Schwartz and Jim Loehr, EdD, authors of The Power of Full Engagement: Managing Energy, Not Time, Is the Key to High Performance and Personal Renewal. Their plan tracks energy expenditure and recovery in four areas—emotional, mental, physical, and spiritual. This strategy helped one of Health life coach M.J. Ryans clients make a major change. “She thought she needed a vacation, but after mapping her energy, it turned out that she was tired because she wasnt spending enough mental energy,” Ryan says. “She needed a better job, not a trip to the beach.”