There's no subject you don't have permission to write about. Students often avoid subjects close to their heart ... because they assume that their teachers will regard those topics as 'stupid.' No area of life is stupid to someone who takes it seriously. If you follow your affections you will write well and will engage your readers.
William ZinsserA writer is obviously at his most natural and relaxed when he writes in the first person. Writing is a personal transaction between two people, conducted on paper, and the transaction will go well to the extent that it retains its humanity.
William Zinsser