This can be seen in other films as well. My hero Kevin Smith started by making a film in a convenience store about convenience store clerks in the same convenience store he worked in. Now what I'm saying is to not make a film about your life story cause honestly who can relate to that but to play off of that. Take experiences, feelings and lessons you have learned and mold that into any film, and that film can be about anything! If you look at Smith's last film Tusk, about a man being turned into a walrus but whats under the blubbery flesh of the film is way deeper. The film through the sharp writing is about storytelling and what it means to be a storyteller and if there's really a unique story out there. Or even Christopher Nolan's new film Interstellar is about a family man on a mission to save Earth by exploring other galaxies. But under the spectacular visuals is a film about leaving a legacy behind and how as a parent you can't help but look at the world through the eyes of your children.
No it lies in your heart!