Mindfulness has been used to help treat mental and physical disorders in the West for the past 30 years or so. It can help with pain management, low immune efficiency, addiction, depression, anxiety and stress.
In a nutshell, it is a way of experiencing life in the moment, rather than in your head. Of accepting life as it is rather than avoiding it with thoughts and self told stories about the way things are.
If you suffer with any of the above afflictions, look up MBCT (Mindfulness-Based Cognitive Therapy) and MBSR (Mindfulness-Based Stress-Reduction) as therapies.