People have adapted to something, and change is upsetting. It is costly. It is risky.
Unless the situation is utterly terrible, people can adapt and build their life around a set of circumstances. To change that requires a great force from within themselves.
This involves inconvenience. It involves self-doubt. It involves living with questions that one cannot fully answer. It involves taking action and giving up privileges or seeming benefits at the outset. For most people adapt to situations that are unhealthy for them because there are certain benefits.
Obviously, one must give up those benefits to change those circumstances. Yet this is a small price to pay to relieve oneself of an unhealthy and unhappy situation.
Passage from The Great Waves of Change, Chapter 14, Seeing, Knowing and Taking Action.