5. There isn't time to learn everything ...

5. There isn ’t time to learn everything at school. Like an iceberg, perhaps only one tenth of what you’d like to be able to do and know. The rest comes later.

School and its world is sometimes called a ghetto, a world out of touch with its surroundings.
Not just because teachers and students go there in the morning, staying inside until they disperse in all directions in the afternoon. But also because what you are made to learn has no relevance for many students. Neither, most likely, for some teachers.
In a situation like that you forget almost entirely what it is like to learn something of value. The stagnant state is the state of things you get used to.
And in this situation your expectations mushroom. Probably more than warranted.
It may then be difficult to remember that school attendance comprising a short span of time can only be the start of what will have to be continued for the rest of your life.
Especially, of course, if your previous learning derives from the various competitive or repressive situations inherent in our society, whether in school or elsewhere in the society.
In other words: If your house needs heating, don’t expect that you can have it so within one hour, but once the house is warm, very little fuel is needed to maintain the warmth.