BEST NEW IDEAS IN RETIREMENT “Eventually, I’ll stop working.” Most of us think that and know it will happen, but millions of us worry whether we’re saving enough to live on once we do. We want to know: How much of my earnings should I set aside? What’s the magic number? 3%? 5%? 10%? More? What your financial adviser won’t tell you: Unfortunately, the retirement industry has spent decades largely avoiding the magic-number question.