The struggles an ADHDer faces on a daily basis can take a toll on their mental health. When you mess up as much as an ADHDer does, you start to believe the negative messages you hear both from internal and external sources. This is especially relevant if the ADHD diagnosis does not happen early in childhood. The longer one goes without an ADHD diagnosis, the more one wonders, “What is wrong with me? I must lazy and/or dumb.”