Pot stocks are having a rough time. Many are down 50% or more from recent highs. But the industry is doing great. Legal cannabis sales are booming. Retail sales are set to grow 35% in the U.S. this year, according to Marijuana Business Daily. And this industry is changing millions of lives for the better. Lucy Stafford’s is one of them. Lucy is a 19-year-old with a rare genetic condition that affects her joints.