It used to be that trauma had no cure. One could do talk therapy for years and years and still get triggered and snap, then fall into depression. Physical abuse, sexual abuse, persisting for life. The constant battle to avoid triggers, feeling crazy, and the dysfunctional coping behaviors that result.
It is important to realize that is no longer the case. There exists today EMDR therapy, which has been shown in case after case after case to provide a permanent cure. There is also an experimental treatment involving MDMA (ecstasy) combined with talk therapy that works. It turns out our brains are more plastic than we thought. We have built-in healing mechanisms, related to sleep and memory processing, and its just a matter of re-activating them when they become frozen by trauma. The demons of the past can, after all, be vanquished.