Please Review my letter. Are there any kind of english mistakes in it?

This is a letter which i have sent to my younger brother for preparation of a competitive examination.

Philip Jorde
Badani Hills
Kannur

3rd May 2014

Siddhartha Singh
Shyamak Place
Mangalore

Beloved Brother,
It has been a long time since I talked to you. What to do? Once we are out to make our career in the world, the daily routine catches up leaving little time for quality experience.
You know, you will graduate from your Secondary School Examination this year. There is whole world in front of you to conquer. I find it as my duty to guide you. Since your stream is commerce, it is better to take C.A. examination at the national level. Chartered Accountants are the most sought after graduates in industry. But the competition is intense. You will to do very hard work to succeed. You must formulate your plans and set specific targets as soon as possible.

Your affectionately
Philip Jorde