I Think Therefore I Am

Has anyone ever told you that you think too much? I never know how to respond to this profound statement. I’ve tried, “Yeah maybe you’re right. How often do you think? I’ll try to cut back to your level”, but for some reason that answer seems to offend. Seriously though, exactly how much thinking is too much? How do you stop thinking and why is it that every time someone says this to me, it always seems to come from someone who I wish would think more? Am I over thinking this?