Stephen Covey's 7 Habits of highly effective people

I wrapped this book up in about a week. It offers such valuable insight and fundamental skill to attaining success. It teaches fundamental skills from thinking proactively, to becoming value centered, to enhancing your organizational skills and even touching a bit on your interpersonal skills. I have adopted some of his suggestions in my life I must say that It was already made a dramatic difference in my intrapersonal and interpersonal skills.