Staring at the wall

That is the reason I cannot leave the window open the whole day.
No! I am not depressed but I stare at the wall since my childhood for many reasons such as trying to find answers or raising the right questions, boredom, wandering/wondering, being, I don't know exactly why because I don't pay too much attention on what I'm doing during this time.
The window is opened when I'm doing normal stuffs such as cleaning up; reading; lunching; talking at the phone and others.
But never when I'm staring at the wall when I don't stare and the wall can be any object I don't see.