I saw this on a site about ADD and found it pretty interesting. I can certainly relate....
  1. Emotion: managing frustration and modulating emotions. Although DSM-IV does not recognize any symptoms related to the management of emotion as an aspect of ADHD, many with this disorder describe chronic difficulties managing frustration, anger, worry, disappointment, desire, and other emotions. They speak as though these emotions, when experienced, take over their thinking as a computer virus invades a computer, making it impossible for them give attention to anything else. They find it very difficult to get the emotion into perspective, to put it to the back of their mind, and to get on with what they need to do.