Just say no to stressful demands. Repeat after me: "No, I cannot serve on the bake sale committee." "No, I do not want to spend every night and weekend driving vast distances to take my child to elite soccer games." Yeah, it sounds simple, but most of us have no clue how to say the "n" word without feeling guilty; and if you're feeling guilty, what's the point? So Susan Newman, PhD, a social psychologist and author of The Book of No: 250 Ways to Say It — and Mean It, provides this handy five-step plan.