Bethenny Frankel builds multimillion-dollar brands, stars in TV shows, and vigorously defends every moment of her day. The secret? It starts with deciding what matters (and what doesn’t). By Jason Feifer “In my glamorous life of being a mogul today,” Bethenny Frankel says, “I cleaned up dog poop and steamed lotion off the carpet.” We are talking at 6 p.m. on a Thursday.…