Dr. Roy F. Baumeister, commenting in a Los Angeles Times article on self-esteem:
People with high self-esteem think they make better impressions, have stronger friendships and have better romantic lives than other people, but the data don't support their self-flattering views...A generation - and many millions of dollars - later, it turns out we may have been mistaken...I'm sorry to say, my recommendation is this: Forget about self-esteem and concentrate more on self-control and self-discipline.
And the Times reporter summarized:
In other words, high self-esteem doesn't make you any better; it only makes you think you are better, which, in the end, makes you worse.
(cited in Going Public: Your Child Can Thrive In Public School, by David and Kelli Pritchard)