Here's a book for all those times you said 'yes' but really meant 'no.' Every day we encounter difficult people with whom we're tempted to agree to anything-if only they will go away. The list of characters is virtually endless: the rude acquaintance, the dismissive relative, the passive-aggressive coworker. Of course, the best way to deal with all of them is to hold your ground, communicating your needs and feelings openly and assertively. But, of...