Ouch, I can't believe I'm about to disagree with to someone who came to the table with the logic badge on...
Ordinarily, I am about as logical and reasonable as they come, to the point where I'm sure it annoys people greatly. However, although looking at the decision making process through a logical lens is a
GREAT idea, I don't think that people really "change" very much.
Oh sure, we'll pick up and drop habits along the way, but I don't think who we are as individuals ever strays very far from our own personal status quo. If someone needs to learn how to be a certain type of person so that they can fit into any given circumstance (such as a relationship), or so that they can be comfortable with a material possession (such as a desk), then they should not be in that relationship or own that desk.
I think that people picking up habits or even personality traits in order to mold themselves to any given situation is nothing more than a dog and pony show. They will still be who they are on the inside, even if the habits or personality traits provide a different "wrapper".