The Book That Changed My Life: The 7 Habits Of Highly Effective People by Stephen R. Covey.
Stephen R. Covey’s book, The 7 Habits of Highly Effective People, was first published in 1989 and has been a top-seller for the simple reason that it ignores trends and pop psychology for proven principles of fairness, integrity, honesty, and human dignity. This book has been helping people solve personal and professional problems for the …