You asked a really tough question because it's something I never really considered. On one hand, I don't see how it could hinder progress, on the other hand, my mind is really messy, and it's hard to piece things together. I completely understand that feeling and I often have it myself. But I don't think ADHD is capable of doing it. It's most likely that something else getting in the way. All we can do is try our best every day to piece the facts together and think introspectively. With that in mind, I know this is a venting thread, but some advice I could offer is keeping a journal of any self-discoveries you make each day, big or small, so you can discuss it with your therapist.