Element, I'm fascinated. With your brains, that simple task should never seem to be a problem. Isn't it just mind/feet communication? Are you trying to figure out the risers, the run, treads, and the stringers all before you take that first step? It's really simple. Just look at the bottom and look at the top. Picture yourself at the top. Look back down at the first step. Pick your right foot up and put in there. Put your hand on the railing if need be. (In California it is a law you must have a railing.) Look at the next step and swing your left foot onto that one. Shift your body weight with it. Now you're truckin'!! You'll be up that flight in no time :)