帮我批一下我的英语作文,要指出错误,并且希望改正

帮我批一下我的英语作文,要指出错误,并且希望改正
Dear Amy:
thank you for your letter.I am so glad to have a talk about your present situation with you.Frist,you should know how lucky you are.Many teenagers have to drop out of school because of they have a poor family.Soyou ought to be greteful to your present life.Second,it's important for you to be confident of yourself.Of course,I think you should communicate with your new friends . You will find that you can get along well with them.Above all,as a senior heigh schoolstudent ,you should learn to be independent of your parents .
If you miss them ,you can keep in touch with them.What's more important is that be happy every day .I believe that with the aid of classmates and teachers,you will overcome the difficulty.
Wish you happy every day!
Yours,