This quote comes from an exceptional talk about envy by Jeffrey R Holland. He gave this in April 2012 General Conference. Another one of my favorite quotes from his talk is:
"Envy requires us to suffer all good fortune that befalls everyone we know. What a bright prospect that is! Downing another quart of pickle juice every time anyone around you has a happy moment!"
When you put it that way, it sounds so obviously ridiculous to be bitter for others successes. I think "pickle juice" is going to be our family's new catch phrase for identifying jealousy and envy.
Ok, and there's just one more that's really good too. I wish I could put this one on a banner at the kids' middle school!
"Coveting, pouting, or tearing others down does not elevate your standing. Nor does demeaning someone else improve your self image."