The answer to this really depends upon the person. I've worked from home since I graduated from college, and initially I would eat, sleep, work, and play games all in the same room, because I had roommates. And I was fine with it.

Some people can't do that. Some people need a dedicated workspace. Some people need to get dressed. My brother works from home, and he still wears a tie everyday. Because that's what he needs to do to get into "work mode".

I'm not saying any of this will work for you. But just wanted to let you know that while this is a thing for some people, you still might be able to get that feeling when you work from home.