Many people believe that once they’ve signed a will or even created a trust that their estate plan is complete. In reality, this assumption is one of the most common and costly mistakes families make.rnrnAs an estate-planning attorney, I regularly meet clients who are confident they are “all set,” only to discover that their documents no longer reflect their lives, their assets, or their intentions. When that happens, even well-meaning plans can unravel at exactly the wrong time.