From my own experience, therapy was only the first step. It wasn't the solution. The further I went down the path (more than 10 years on my own, couples therapy for over a year with my ex-wife, and two separate one week intensive experiential retreats) the less helpful it was. After doing work with a Zen coach, meditating regularly and going on a ten day silent meditation retreat what became clear to me is that therapy tends to drag one's focus back to what happened in the past to explain the present. I think therapy has a place. I think it would be exceedingly difficult to create a valid study that proves what this piece claims.