write a letter to your brother/friend advising him how to do well in English?

Suppose you are Fahim. Your brother/friend is Mahim. He is very weak in English. Now, write a letter to your brother/friend advising him how to do well in English.

Well in English

My dear, Mahim,

I received your letter yesterday. I am very sorry to know that you are weak in English. As an international language, you must have good skill in English. In order to have a good job, a good working knowledge of English is necessary. If you want to get higher education, you must know English properly. Because most of the books of the higher level are written in English. Without knowing English you will not be able to communicate with the people outside the country. It is impossible to be a good doctor or a skilled engineer without having adequate knowledge in English. So many jobs today require a good command in English. I hope, you will now understand the usefulness of learning English.

I am well. Best wishes to you.

Yours ever,

Fahim