OCD is of course Obsessive Compulsive Disorder. This disorder relegates the sufferer to repeat tasks and behaviors over and over again. If, for example you check the doors and windows every morning before you leave home and each night before you go to bed. What may take you only minutes to complete from start to finish may take you 4 times longer since you might doubt that you checked a certain window or door to see if it was locked. So, you repeat checking them over and over again. Sufferers have had a lot of success with the linden method for treatment for OCD, phobias, anxiety and even panic attacks.