Based off a show, a therapist gets ahold of Erica, who has many regrets in her life. Dr Tom we'll call him, is indeed a therapist however he has the ability to send people back in time so they can adjust things, however they cannot change other people's lives.
I think there's many possibilities with this idea, looking for someone to flesh it out with.
Once Upon a Time.
Also a tv show that's currently popular. IMDB or wikipedia for specifics if you haven't seen the show, but basically, it takes the storylines of famous fairy-tales and makes a new twist on them...