It happens to the best of us. That nagging feeling, as we enter our fifth or sixth decade (sometimes earlier), that maybe we haven't become everything we could have become.

Though "midlife crisis" may make you think of people cheating on their longtime spouses, riding around town in sports cars, or suddenly becoming preoccupied with their bodies -- some good can actually come out of the emotional upheaval. We prefer the term "midlife transition." Contrary to popular belief, it doesn't have to be all about rash decisions or quitting your job. It can be a chance to set a new goal or evaluate what's really meaningful in life, or to let go of something that's been holding you back.

Here are some great reads to get you inspired:

1. Lots of Candles, Plenty of Cake by Anna Quindlen