I'm 15 and live in England. 

Sometimes I write songs. Sometimes I write stories. Other times I don't

I think I am easily comparable to a Mouse-Cat because my only enemy is myself.

I could also try and fit in with either cats or mice and never truly be at home. I must find the other Mouse-Cats (which are more common then you think)

That last one was a metaphor but don't waste your life trying to figure it out.