Some anxious clients have such an overpowering need to know they’re not making a mistake, missing something important, or thinking or feeling something wrong, that they constantly seek reassurance from therapists, family, friends, doctors, and the internet. Most compulsive reassurance seeking attempts to answer unanswerable questions, solve unsolvable problems, or know for sure something that’s unknowable. In fact, reassurance often works backwards with clients who suffer from generalized anxiety disorder or OCD, actually increasing distress. Rather than helping them to achieve greater certainty, the best approach is to teach them how to tolerate uncertainty.