A Lack of Coordination

I move in a clumsy way, in a body too large for me, quick large movements like if my hand were a bears paw
 I will suddenly thrust my arm out in one quick swipe of the countertop, and knock over a glass cup breaking on the floor.
These movements are unconscious, I have no control of them as I wish, yet I still hold a lot of guilt for these sudden reflexes
 In this one area I could be more coordinated, my mind working more in unison with my other  appendages.
How more evolved the desert tarantula is in his body to mine.