I need to change

I'm glad to received receive your letter again. Recently, I am busy writing a paper, busy with work.,  one day down I feel felt very tired. But it is very full, This Sunday I will go to the library to reading a book. It's already have a period of a long time I havenot been didn't go to the library, this it is very bad! So I want to change your my own time schedule, that this cannot not to continue as previous days!

Please suggest if it makes sense.