For people with deep seated emotional/behavioral problems, I would strongly recommend against it. The coaches in the program aren't trained to be therapists, they're only there to facilitate discussions and prevent subgrouping. The kind of work involved with trauma and neglect is much better handled by a licensed therapist. Can't speak to individual coaching, but I imagine it's similar based on what I've asked about the coach's training. The only upside to the group coaching is it's cheap at $30 for a 90min session each week.

After fixing a lot of problems in my life, I joined the program expecting to talk to other people that are 90% of the way to getting their shit together but most of the people in group had much deeper, unresolved dysfunctions that __really__ brought me down. By all means, reach out and seek companionship in hard times, but individual therapy yields much stronger results.