These are books (in no particular order except for the first one) that I've read or acquired that have been helpful to my process as an actress.

Good Tools and Reads for Actors

• Actions: The Actors' Thesaurus  So helpful for finding actionable verbs!

• The Mystic in the Theatre: Eleonora Duse Biography of Actress Eleonore Duse.
• Movie Maker's Master Class: Private Lessons from the World's Foremost Directors 
• The Alchemist
• The War of Art: Break Through the Blocks and Win Your Inner Creative Battles
• Eastern Body, Western Mind: Psychology and the Chakra System as a Path to Self
• The Artist's Way: A Spiritual Path to Higher Creativity A three month workbook.
• The Empty Space, A Book About the Theatre: Deadly, Holy, Rough, Immediate
• Blue Truth: A Spiritual Guide to Life and Death and Love and Sex
• How You Do Anything is How You Do Everything: A Workbook