Don't Lose Money First. IJin Insight Short Reads, #2

Warren Buffett's most famous rule - never lose money - is treated as a joke. It isn't. A 50% loss needs a 100% gain just to break even. A 90% loss needs 900%. The arithmetic of recovery is far crueler than it feels in the moment, and the deepest losses are measured not in dollars but in years you never get back. Don't Lose Money First is a short, plain-spoken field guide to the five ways investors get permanently wiped out - the permanent hole, the single position, the forced sale, the catastrophic trade, and the year you don't sell - and the quiet, unglamorous defenses against each.
Written by a Korean nurse who learned about risk the hard way - across thirty years of watching markets and eighteen of her own mistakes - this is not a book about predicting the next crash. It is about still holding something when the recovery comes. Because only the money you keep can compound.