I've been going to therapy on and off for ~5 years. I'd say it's changed my life. Cognitive Behavioral Therapy helped me significantly cut down on negative self talk, which has improved my mood in general. I'm also more in tune with my emotions and I am able to sort of stop myself and think about my reactions (sometimes, still trying to work on it).
I've also become more empathetic and gentle. I think I've probably become a better friend and person as well. I've learned to let go of old fears, understand some traumatic responses, and most importantly, care about my own happiness and future.
I know it's not a possibility for everyone, but therapy is so worthwhile, especially if you have a goal. There's never anything wrong with having more tools at your disposal.