I don't think it is the size of the house. I think it is the attitude and the importance you place on the appearance. If you can't be happy doing 25 cent puzzles or living in a 1000 sq ft house then you might not be happy no matter how much you have.
I think it's great you own three businesses and that you were thinking of hiring a maid. I don't think there is anything wrong with that. Unless that is the only thing that is important to you.