This Lancet article uses the same approach and finds the same results as Soul 2 Sole
Mindful meditation developed to recognize and respond constructively to the thoughts and feelings associated with depression relapse, thereby preventing a downward spiral into depression. It is often considered a more spiritual approach than traditional cognitive therapy because it employs meditation-based practices to teach clients how to step outside of their emotional experiences, observe their circumstances in non-judgmental fashion and, as a result, respond more proactively (rather than reactively) to stressful circumstances.