“Self-help fiction” A book to inspire and help in life’s reflection and improvement.

I'm searching for a book to gift to a family member who is an young man starting a family. He loves to read fiction, but I'd like to gift something that can be impactful for this moment in his life.

Maybe a MC who's a strong dad and/or a good partner, or someone getting their life back after not having a good start.

Anything inspiring that makes him think.

Thanks.