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Unless you are prepared to give up something valuable you will never be able to truly change at all, because you'll be forever in the control of things you can't give up.

Andy Law (1999). “Creative Company: How St. Luke's Became "the Ad Agency to End All Ad Agencies"”, Wiley
Unless you are prepared to give up something valuable you will never be able to truly change at all, because you'll be forever in the control of things you can't give up.