Sadly, a lot of people never make this connection. They are miserable throughout their whole lives because they are dependent on their parents for continual handouts (as my late Sister was) or were waiting to inherit from their parents (as many of my friends did). They can't afford to piss off Mom and Dad, lest they be written out of the will! And parents know this.
Fifth, plan some activities. Like I said, if you have a car, you can "go visit old friends" or take in a movie or just go to the library, or go for a walk or whatever. Sitting around the house with nothing to do other than eating and talking can rub on your nerves in short order. In many families, people retreat behind a book, magazine, newspaper, or video game, to pretend it all isn't happening. In my family, it was books and newspapers, which drove Mark nuts. My family would sit around reading old copies of National Geographic and studiously ignoring each other. Four days of that is a death sentence! Find something to do outside of the house. And hopefully, it isn't shopping.