For most interior designers, there are easy clients, difficult clients, and then there is the hardest client of all: themselves. “When you work with clients, you have lots of parameters,” says Robert Passal, a New York designer known for his traditional-meets-glam style and roster of high-profile clients including Yankees’ All-Star Alex Rodriguez and trendsetting hair stylist Guido Palau. “When you do your own work, the options are unlimited. It can be much more difficult to design for yourself.”