I think the reason you can't meditate is that your mind is always working in fast forward.  Even as a kid you were always plotting your next big adventure, writing some story about starving animals lost out in the forest or directing a play in the garage.  Also Bella was telling you to just give it up and take her on a walk.  Now that is more your style.  Body in motion to match your mind which is always cranking away.  :-)