One of the first Personal Development books that I read was ‘The 7 Habits of Highly Effective People’ by Stephen Covey. I can remember working in a team of consultants and our manager was that impressed by the book that he purchased a copy for each of us. Many of my colleagues couldn’t be bothered with it, but a couple of us took the time to read it and we have been benefiting from applying the habits ever since! They are based on common sense and will transform your life if you take the time to internalize them.