Why him?

Today was the day I really felt like crying in the dissection hall, not because of the irritating formalin. It was all because of him.
Lord, I guess I challenge You too much..is it the way You answer me? I feel so burdened in my heart. Out of so many people, why him?
I neither could understand what he was trying to teach nor feel his enthusiatism to teach us.
Lord, I know I prayed: Stretch me to the maximum.
But, is this truly the way You are stretching me and not torturing me?
I think this is the first time I need to refer at least a few books just to catch up what I missed during the two hours dissection which I had not learnt anything.
I am draining out of energy.
Lord, let me draw strength from You.
I believe that You will never give me a task which is too heavy for me.
Lord, enlarge my capacity for all the challenges lie ahead.
and I wanna to let You know that:
I never regret of challenging You.
I pray for the best to come even though I am in the worst situation now.
Because You are in control of everything.