Mindfulness: A practical guide to finding peace in a frantic world http://www.amazon.co.uk/Mindfulness-.../dp/074995308X
It is a tool hun. One of many to stay well. Maybe you can do it with a group or with your therapist. I started meditation with my first therapist years ago. But yes takes some discipline, which is not always feasible when you are acute. Right now I am biting everyone so I would not try it as an emergency measure, but I would do it as a long term discipline- like 5-15minutes per day.