I cringe at backstory. Because it never quite explains or gets into some psychological thing that is never quite right and never quite the truth and who knows why someone is some way.
When your hobbies get in the way of your work - that's OK but when your...
Tell the truth work hard and come to dinner on time.
I have never yet met a healthy person who worried very much about his health or a really good person who worried much about his own soul.