CBT helped me a lot, which actually surprised me as I was pretty skeptical about the whole idea.
I was referred by my GP back in 2010, after finally seeking help for my depression (or, more honestly, after my mum forced me to go). It took me a while to get into it, because I was very closed off at the time. Ironically, I learned that the root of my problems lay in the fact that I bottled up my emotions and closed people out. Basically, in 2010, I bottled too much and finally exploded.
CBT has taught me the up-sides of talking about my problems and feelings, and also how to deal with issues in a healthy manner (rather than turning to drugs or alcohol like I used to). It has taught me to want to improve myself and given me motivation to make something of my life. Unfortunately, my trust issues with the people around me couldn't be fixed, but I remember my therapist saying to me one day, "If there really is no one around you that you can talk to or trust, why don't you get away from them?". To this day, I still have that single sentence to thank for the fact that I left England and moved to Beijing. I'm sure she didn't mean it in such a literal way, but it's the best thing I've ever done.
Right now, I have a life here that I love, I have people I trust and I'm doing well. I honestly believe that if I didn't see that therapist and I didn't leave England, I would be dead right now. So I consider CBT to have saved my life.