Worry does not empty tomorrow of its sorrow, it empties today of its strength.
Corrie ten Boom wrote from the vantage of a concentration camp survivor, which gives her observation teeth that self-help platitudes lack—she knew that worry isn't merely unproductive but actively *hostile*, a thief working in real time rather than a harmless habit. Most people understand that fretting won't change tomorrow, but she captures something sharper: the arithmetic of suffering, where you pay today's currency for tomorrow's problem that may never arrive. When you catch yourself rehearsing a difficult conversation at 3 a.m., you're not borrowing trouble from the future; you're spending the vitality you'll actually need to *face* that conversation when it comes.