Jeff McElfresh is the Chief Operating Officer of AT&T, a global communications leader serving more than 100 million mobile and broadband customers in the United States, and millions of business customers. Jeff has more than 25 years of experience with AT&T in a variety of strategic, operational and technology leadership roles. Most of his career has been in our Mobility business — the biggest single driver of AT&T’s consolidated revenues. In this Episode, Jeff reflects on the value of education, the importance in investing in personal development, Stan Sigman’s principles of leadership, and the ubiquitous nature of data access and how wireless has revolutionized the role of data in our daily lives.