A mind filled with fear and bad thoughts is an unquiet mind. When you are worried, it can be hard to direct your attention on even a minor problem. For some people, this can interfere with work, sleep and other activities. In others, it could lead to a serious mental disorder. People who suffer from anxiety, a nervous disorder, have unreasonable thoughts and fears about the future. Often they are unable to control these thoughts. They are also less able to deal with stress. Two recent studies found that doing mindful meditation exercises can reduce signs of stress in people suffering from anxiety and make them more productive. The studies also showed that mindful meditation can lower a person’s stress levels. Meditation is a simple, low-cost way to help calm an unquiet brain. We can define mindful meditation as thinking quietly about what is going on in the present. You don't think about the past or the future. You think only about your own breathing and what you sense around you.