If achieving your potential requires favorable judgment by others, you are much less likely to succeed.

Know how weather, especially humidity, can affect the movement of doors and windows.

I suspect that some apparently homosexual people are really heterosexuals who deeply phobic about the opposite sex or have other emotional problems.

Know what to do if you feel faint or dizzy, especially if you might fall and hit your head.

Have enough sense to know, ahead of time, when your skills will not extend to wallpapering.

Have you ever noticed that when you must struggle to hear something, you close your eyes?

Spending waiting moments doing crossword puzzles or reading a book you brought yourself.