How does it feel like when your mind is foggy? For me, fogginess happens when there are an overwhelming number of choices, or possibilities, or the problem seems to cut so deep that only a tourniquet will help. Fogginess can also come from incomplete thinking - we stop at a place that makes sense to our unseen bias, and move forward without looking for other facts.
Flaws in our thinking develop when our thinking is misdirected (it was true about something else so it must be true about this), polluted (that advertisement is just SO convincing), corrupted (it might not be exactly right but it's good for me), and any of dozens of factors that fog our thoughts.
The flaw that blocks you knocks you off center. The flaw that deceives you leaves you without a real solution.
Find the flaw in your thinking while you can still find it, or the problem is yours to keep.
-- doug smith