For me I love Biographies to see how people got through life, and challenges, good times bad times.
I find a lot of encouragement for my own life, and also some very good advice.
Everyone has a story to tell, and the fact they took the time...and told 'what really made them' the people they are.
The best thing is that they write from their thoughts, even if not well written.....it is still a look.
Being too focused on our lives, we tend to forget their are some really amazing human beings out there.