“When people are ready to, they change. They never do it before then, and sometimes they die before they get around to it. You can't make them change if they don't want to, just like when they do want to, you can't stop them.” ― Andy Warhol
People intend to change, but often don’t follow through. It has been my observation that most people don’t change until they hit bottom. Heart surgery and kidney removal will usually do it. Having your doctor inform you that you might have had a silent heart attack will usually do it.