That reminds me of a tangentially related thing I experienced. I never had a problem  with left&#x2F;right until I heard someone explaining the &quot;hold your thumb out, if it makes an L that is left&quot; &#x27;trick&#x27;. Before hearing about that, left and right came naturally, and I &#x27;just knew&#x27; which was which. After hearing it, I constantly second guess myself, and there is a brief (but noticeable) hesitance before I can say &quot;Ok, that&#x27;s left&quot;.