Prefer to work from home, or to work in the office?

If I can choose, I want to work from home.

I think I am stressful when I in the office.
I always have to be focus on what I do, because my supervisor maybe always monitor me.Therefore, I don't feel very comfortable and have to be care if I did something wrong.
Also, when I work from home, I can use the free time as long as I finish the tasks assigned by my supervisor.I don't have to always stay in my office.
More important, I can work while eatting, so I might be able to feel more relaxed when I work from home.