By Glenn Dromgoole Johnnie Lou Avery Boyd, beloved longtime Abilenian who now lives in Midland, recently sent me a copy of her latest book, Wisdom of the Aged. And, indeed, the 185 pages (8 ½ by 11 in an easy-to-read typeface) are packed with practical and insightful wisdom.  Johnnie Lou writes: “I wish a wise elder had sat me down