It might be related to other physical problems such as lack of adequate sleep or reaction to medications. It might also be part of Attention Deficit Hyperactivity Disorder (ADHD), learning disorders, and/or emotional factors. We'll take a look at some of these possible causes. I process things slowly because I have a lot of anxiety and I'm really tense. I also have a lot of anxiety about making mistakes. I usually try to avoid making mistakes because I'm really self-conscious about them.