It really is on you to manage how your handicap effects you emotionally. Consider that your parents aren't going to be around forever. They have to live with you . . . at least, for now. Someday there won't be anyone who has to live with you. If you don't want to end up isolated, you need to change how you act when you're upset. There is always going to be things to get upset about.

You sound pretty smart and able to logic things out. You've got to look at what your options are. Getting into a rage is definitely an option. But other people have options, too. They have the option of turning their backs on you. You can imagine how you would like people to react when you are upset. If they don't, they don't. You can feel that people aren't fair, but they may not care.