What would you teach in the school of life?

Life isn't fair 101 - Even if you SHOULD be King or Queen of the Universe, you're not. How not to take your bitterness about this fact out on small children, other drivers on the highway, and the clerk at the grocery store.
Extra Credit - Understanding that your teachers are not out to get you because you have to read the textbook or learn how to write a simple English sentence.

Real World 310 - Don't assume that just because someone smiles at you on your first date, they're your soul mate. Slow down. The children you'll never conceive will thank you.

Employment 205 - The boss is always fucked. You still have to be professional, regardless of this. One day, YOU may be the boss. Or not.

Reality 312 - God does not live at the bottom of a fifth of Jim Beam. The world doesn't care if you had a bad childhood. The fact that you COULD have been a contender will not earn you the respect of actual contenders.