This book in my opinion is and has a great purpose, and that is to show the reality of our life. You can have great times, frustrating times, traumatic times, funny times etc.
But through all those times, God is always there with you, He isn't pushy, never forceful, and always loving and accepting.
As a kid growing up, I found it hard reading a book about one plot, one story, dragging on and on. I would give up after 5 to 10 pages, no offense to other authors.
The great thing about this book is it has 15 chapters, with different types of stories, each chapter with different characters, but each chapter is based on events on my life. All true events, showing that even after you accept Jesus Christ as your Lord and Saviour, real life happens, and your choices can either take you forward or push you back, you can only hold yourself accountable for your choices.
But ultimately, if you place Jesus at the Center of your life, then He has your back. He will never ever leave you or forsake you.