self improvement

You suggest a good management / Self Improvement book?
Hello everyone, I wonder if you know of a good book or two that I can read. I am concerned to be a better manager to improve my management skills and communication skills. I hope to be a strong leader, one day. I read a lot of books about improving personal and do not mind reading more. Thanks for your time.
dealing with the First-Time Manager by Loren B. Belker Becoming a successful manager: How to make a transition Body fluid personnel to lead others by Jack H. Grossman
Improve Low Self Esteem Confidence Self Improvement