The world is full of advice for married couples, newlyweds or not -- some of it commonsensical, most of it well-intentioned, and much of it wrong. In the 14 years we've been married, my husband and I have broken all the rules at least once -- and when I copped to friends, most of them gleefully admitted they'd done the same. So I asked them to go on the record as we figured out the biggest myths about marriage. With the help of a few experts (themselves veterans of long, kid-filled relationships), we've decoded what bits of conventional wisdom are worth tossing -- and what are worth tweaking -- from the suggestions we've all heard since walking down the aisle.

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