Learning natural English is a skill common to any individual living in an English-speaking country. This English is learned through daily contact with people who speak English. With this we can conclude that natural English is learned, by us, since our birth through living with our family. Thus, we can say that this Englishman has an informal, relaxed air and without many rules and guidelines for its use. We can use it talking to our friends, or, in common everyday situations.
Standard English, however, refers to the standard, cultured and grammatically correct way of speaking and writing in English. We can only learn this type of English through classes and reading texts that cover this type of language. It is important to learn it because formal situations, social events, academic events and even living with people in higher status than ours, requires that this type of language be used.
It is not foolishness to believe that you can be whatever you want.
Every person is a unique individual with a different background and upbringing and thus this means you have different goals and aspirations. People's goals and aspirations can be similar or the same but just because two things are the same doesn't cancel them out.
Having realistic expectations are important when having goals and aspirations because naturally, you cannot become a unicorn or own the world.
