Time flies as like an arrow

Time flies as like an arrow (I'm not sure this is the right simile. We say something flies as straight as an arrow. You are saying that time is passsing quickly, maybe like a speeding bullet). I haven't written any compositions for a half a year (I would always use six months rather than half a year) . It seems that although there are many ideas in my mind and I have no idea where to start to write (or start writing). Anyway, quite a few good and bad things have happened (to me) during this half year time. (This sentence doesn't add anything unless you give examples)
Now I'm working from Monday to Friday in a school. I'm teaching English with but lacking of zeal ("enthusiasm" is more usual.) 
I wanna want to change this situation. But what should I do? How can I cheer myself up?

I know what teaching in China is like. I feel the same!

Time flies as like an arrow

Time flies as like an arrow.__I haven't written any compositions for half a half year.__It seems that there are many ideas in my mind and I but yet to have no an idea where to start to write.__Anyway,_quite a few good and bad things happened during this half year.
Now I'm working from Monday to Friday in a school.__I'm teaching English without lacking of zeal.
I wanna want to change this situation.__But However, what should I do? How can I cheer myself up?

Alas.

Time flies like an arrow

Time flies like an arrow. I haven't written any compositions for half a year. It seems that although there are many ideas in my mind I have no idea where to start to write. Anyway, quite a few good and bad things have happened to me during this time.
Now I'm working from Monday to Friday in a school. I'm teaching English but lacking of enthusiasm.
I want to change this situation. But what should I do? How can I cheer myself up?