Write a letter to your friend congratulating him on his brilliant success.
01 September 2018
I became very glad to receive your letter. In your letter, you have written that you are well. I am also well. From your letter, I have come to know that you have obtained GPA 5. I am highly glad to know your result. My joy knew no bounds when I heard about your result. Really, your brilliant success is a matter of great pride and satisfaction to me. I know your success is never a matter of chance. You have all through worked very hard and now you have achieved it. I offer you my heartiest congratulation for your brilliant success.
No more today. Convey my best regards to your parents and love to the younger ones.