"My ADD mom and sister drive me crazy with their fast-paced lives, and they get mad when I just want to relax. What can we do?"
The words "mutual understanding" and "respect" come to mind. Thom Hartmann's book, ADD: A Different Perspective, can help you understand each other better and appreciate your differences. If your clashes become a chronic problem, a family therapist knowledgeable about AD/HD may be able to help.