“Make it a rule of life never to regret and never to look back. Regret is an appalling waste of energy; you can't build on it; it's only good for wallowing in.”
"Je ne parle pas français," http://digital.library.upenn.edu/women/mansfield/bliss/bliss.html#francais from Bliss and Other Stories (1920)
Variant: I have made it a rule of my life never to regret and never to look back. Regret is an appalling waste of energy, and no one who intends to become a writer can afford to indulge in it.
Context: I have made it a rule of my life never to regret and never to look back. Regret is an appalling waste of energy, and no one who intends to become a writer can afford to indulge in it. You can't get it into shape; you can't build on it; it's only good for wallowing in.
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Katherine Mansfield 43
New Zealand author 1888–1923Related quotes

“Never regret yesterday. Life is in you today, and you make your tomorrow.”
The Creation Of Human Ability (1954).

“Life is full of regrets, but it doesn't pay to look back.”
“Never regret. If it's good, it's wonderful. If it's bad, it's experience.”
"Model's Web rants pined for love" in Daily News (New York, 29 June 2009) http://www.nydailynews.com/news/2008/06/28/2008-06-28_models_web_rants_pined_for_love.html

“Learning is the only thing the mind never exhausts, never fears, and never regrets.”