I think this beautifully encompasses how we should plan for each year, how we should prepare for each week in class, and the mindset we should take there with us.
"I have pondered and earnestly petitioned our Heavenly Father to know how I might best be able to serve you tonight. I pray the power of the Holy Ghost will be with each of us—that we may think what we need to think, feel what we need to feel, and learn what we need to learn so we can do what we know we should do and ultimately become what the Lord yearns for us to become."
I love his use of the word "serve" in the first sentence, and the progression in the second sentence - think, feel, learn, do, become.
From Elder David A. Bednar's CES fireside talk "That We Might 'Not Shrink.'"