If you're just getting started, contemplating making some changes in your life but not yet ready to take specific action, you may find these books helpful in inspiring you to move forward. 

Everyone by now has heard of Eckhart Tolle, thanks to his series with Oprah based on his book A New Earth.  But you may wish to start with one of his earlier books, The Power of Now, which lays the groundwork for A New Earth.  Both will give you a fresh view of your life and the possibilities that are open to you.