What is this book about?

ok, so I read this book, I didn't analyze it too deeply so I feel like I'm missing the true meaning of the book. I get that he's a guy that travels and learns new things and meets new people that inlfuence his life ( and if I'm wrong there please correct me) but for some reason I think that there's a deeper meaning that I didn't catch because I didn't pay attention to it so much. I wasn't looking for a deeper meaning in the book, so I didn't find it. Does anyone think this book has a deeper meaning? If you do, what is it?