It could have been a chapter right out of the late Betty Friedan’s The Feminine Mystique. Actually, it was an article in Glamour magazine earlier this summer, written by Kristin Armstrong, ex-wife of cyclist Lance Armstrong. In a piece titled “What I wish I had known about marriage,” Armstrong expresses regret over having lost herself in marriage by forgetting about her own needs and trying to be the perfect wife and mother. She cautions other women not to do the same. Oprah identified so much with Armstrong’s message that she devoted an entire hour to it on her program —...