I was quite surprised when I read in your letter that you had decided not to finish your studies at the university.
当我在你的信中看到你已决定终止大学学业时感到很是惊讶。
So, celebrate your success, and invite your parents to celebrate with you, however hard it may be for them. If you continue to be excited about your future, you may come to educate your parents in the same way.
因此,庆贺你的成功,并且邀请你的父母跟你一庆贺,尽管这样做会让他们感到难以接受。如果你还在为自己的未来而感到激动的话,你可以慢慢用同样的办法说服你的父母。