For those of you who don't know, I read a lot (I have read about 20 books this year). Sometimes it is actually reading and sometimes it is audio books. Audio books are a great way to keep taking in information to keep your ideas fresh and not get stale. If you are not green and growing, you are ripe and rotting.
To know what type of books to read, I would recommend reading StrengthFinder 2.0 by Tom Rath. I still consider it one of the top 5 books I have ever read. The basic idea is that there are 34 different strength themes. With the included online test, it will help identify your top five strength themes. The best way to think of these strength themes is this is how you see the world; they are your lens. Once you understand what your strengths are, you will know what skills you should reinforce.
The better you can execute your skills that are shown in the book, the more impact that you can have in life. For those of you who have the book, my personal strength themes are maximizer, futurist, input, ideation, and arranger. This is how I see life. What it showed me is what type of books and teaching inspires me. I read lots of creativity books and things that help me become more efficient. When you know what you need to strengthen, you will be more inspired and happier in life.