英语书面表达 假如你是李明,就个人爱好带来的困惑给美国朋友Mike写一封信并请求帮助

Dear Mike,
How are you doing all these days?
I have a hard time for now. You know, I am fond of the knowledge about the travelling in space and I often go to the library to read the books about it. My trouble is, both of my parents do not understand me. They think it is useless and helpless. They said I should spend more time on the study and the good mark is everything! But I have my opinion. I think that interests are goood for my study, I cannot study all day. It is good to keep a balance between hobbies and study.
What do you think of my trouble? Can you give me some advice and help me out? Thanks!
Hope your everything goes well!
Yours,
Ming Lee