Staying in the moment can help deal with long-term struggles
http://www.psychologytoday.com/blog/all-about-addiction/201110/mindfulness-meditation-and-addiction
...is often an attempt to go somewhere else, emotionally and mentally. Very little time and energy are spent noticing the present moment, except to try and change your experience.
Mindfulness teaches that instead of trying to avoid your experience, which has been associated with a host of mental and emotional disorders, you adopt an inquisitive and observing attitude toward your thoughts, feelings, and circumstances.

