> It won't fix something like schizophrenia
Your comment is terribly unhelpful. Therapy isn't about "fixing" someone, but to help individuals with issues that negatively affect their life find opportunities to manage those issues. CBT is not something you can start doing by yourself without an external catalyst.
I have ADHD, OCD, and bipolar II along with recurring bouts of PTSD from a terribly traumatic childhood. Without therapy, I would have considerable more issues integrating with my peers and navigating the emotional turmoil that is the battlefield of my brain. Therapy has assisted me in shifting my perspective and enabling me to live my best life despite the demons that seem to constantly want to drag me down.