Hmmm!Being a teacher seems to require a lot of patience... I don't have a lot of patience.
What is he doing to make you feel this way?
Whatever it is yes, you do need a ton. And if you are not that way inclined naturally, you have to learn it or learn to grit your teeth and smile!
At least it isn't for long.
Thort the guy was qualified, isn't he showing potential, or grasp?
Best of luck in the teeth gritting dept! I do sympathise!