The 7 Habits of Highly Effective People is a well recognised title and recommended classic reading in the personal development genre.
In this book the author outlines principles that we can use to be more effective in our personal and professional lives. I find that people either love or hate this book, personally I found the perspectives given to be fairly practical and believe that you could use them individually or together to improve on what you do.
More reviews and information at Goodreads.
Good read: 7/10