Be a student

It is hard to be a student sometimes. Maybe you are a boss. You think that it is embarrassing, you have to learn from your subordinates. Maybe you are a father/mother. You believe that it is unbelievable, you have to be taught by your son/daughter. Maybe you are a teacher. You consider that it is weird, you have to get help from your students. But I promise you that being a student is always better than pretending to know everything. No matter how old someone is, no matter how smart she/he is, no matter what title they have, everyone can be your teacher. You learn from your subordinates doesn't mean you are weak. You learn  from your subordinates means your mind is wide-open. You learn from your children doesn't mean you are disqualified to be their parents. You learn  from your children means you demonstrate a good example for your children. You learn from your students doesn't mean your academic level is insufficient. You learn from your students means you are humble enough. Always choose to be a student. It is a best choice for everyone.

(Thank you in advance for correcting my grammar mistakes. )

You learn -> Learning: It is more grammatically correct to use learning here, however I can't really describe why.

a best -> the best: "the" always proceeds a superlative (most, best, worst, ...) 

Except for these two little mistakes, your english is very good!