A letter to your younger brother advising him not to mixup with bad boys

My dear Kunal,

I received your letter yesterday. The news has really shocked me that you have been mixing up with bad boys. You should be very cautious and choose your friends very carefully.

It is my advice to you not to associate with such types of students in future and pay attention to your studies only.

I hope you will soon show considerable improvement in your conduct.

Yours affectionately,