CBT T and I are exploring ACT now. I am reading "ACT MADE Simple" which is really written for therapists but I have found it useful.

CBT and ACT seem like the opposite of psychodynamic---looking to the future not the past. Psychodynamic was perfect for me when I was deathly suicidal. Once stable and not feeling horrid, ACT seems more useful.

One part I like about ACT is avoiding what they call "dead person's goals." This means that you shouldn't set goals a dead person will do better than you do by default.

For example: "I want to stop drinking" well, a dead person already has you beat.

Goals should move towards positive behavior or move towards meaningful living. Some interpret that as spiritual but it is one option of many. You move towards what matters to you most.