The concept of a supportive life coach / informal therapist is what I'm most excited about when it comes to the potential of AI. I recently added a feature along the same lines in my project (https://kindmind.com/) that I called "Kind AI".

I envision a future similar to what's portrayed in the movie, "Her", but it's a supportive coach speaking to you at any given time, encouraging you, telling you are good enough, and helping you identify and correct negative thinking patterns.