Possibly you have cause and effect backwards. What if the act of ‘thinking’ that you have a problem leads to the heightened distractibility?

Maybe... but as an ADHDer, my experience is that the bigger problem is thinking "I have this problem" but hearing from others "you're overthinking things" or "you don't need that, just get started" and consequently:

1. Never becoming confident enough in the problem to start solving it.

2. Never getting the rubber-duck collaborator to help you even imagine how you would solve it.