Mea culpa

I, for several days, gave back away my food, if you know what I mean.
I cover my arms so that paleness won't be seen.
For a couple years, waking up wasn't my favourite part of the day.
I still look when no one's looking.

Am I guilty? of sins, what's a sin?
Are sins only made by guilty ones?
Is guilt a sin if nothing has been commited?

I lay over my own body but barely i see through my own eyes.