Speak the King's English well, and then, learn when it isn't necessary 3. There is too much fun without responsibility in the world. Too many think that people are supposed to be automatons who are allowed no mistakes. The world leans toward either of the extremes. The best happiness is one sigma to the right and one sigma to the left of balance.
Balance also teaches one when to be at either end.
It allows one to not take oneself too seriously, or to shortchange oneself by not taking what should be serious too lightly. Let your life be guided by strong moral principles. The world today is amoral. The crowd does not admire the one who takes a stand. Yet, if one develops character and doesn't deviate from it, they seem to start off behind, but will finish way ahead.