They rarely read for fun and enjoyment. Most rich people study self-help books, history and bibliographies.
Reading a good novel to derive pleasure has positive significance to your career. You can add positive value by reading biographies of people that moved from grass to grace. Biographies reveal the problems, approach and success stories of subjects.
Tom Corley investigated the daily habits of 233 self-made and rich millionaires. He compared the results with that of 128 poorer people with annual earnings below $35,000. This was quite easy since he is an accountant and financial planner.