He's left in the lurch
I screwed up.
I had a touch of carpal tunnel pain and overdid my exercise routine at the fitness club.
Now I can't use my right hand. I need help on anything that calls for right hand use.
Try brushing your teeth left handed, writing, eating oatmeal without dripping milk on the table or Cheerios that won't stay on the wobbly spoon.
I can't drive a car because all the knobs and handles are backward.