Dale Carnegie’s book, regarding social skills and personal success, is still popular today.

Twelve Things This Book Will Do For You (listed in the 1936 edition)

Get you out of a mental rut, give you new thoughts, new visions, new ambitions.
Enable you to make friends quickly and easily.
Increase your popularity.
Help you to win people to your way of thinking.
Increase your influence, your prestige, your ability to get things done.
Enable you to win new clients, new customers.
Increase your earning power.
Make you a better salesman, a better executive.
Help you to handle complaints, avoid arguments, keep your human contacts smooth and pleasant.
Make you a better speaker, a more entertaining conversationalist.
Make the principles of psychology easy for you to apply in your daily contacts.
Help you to arouse enthusiasm among your associates.