""How I Made Millions Or The Secret Of Success"" is a self-help book written by P.T. Barnum, the famous American showman and entrepreneur. In this book, Barnum shares his personal experiences and insights on how to achieve success in business and in life. He offers practical advice on topics such as marketing, sales, customer service, and leadership, as well as the importance of hard work, perseverance, and a positive attitude. Barnum also shares...