Forget investment books, read BLINK by Malcom Gladwell if you haven't already.
It is a book about your unconscious thoughts and when to/not to apply them to real use.
A fair bit of this logic can be applied to investing, with applicable experience/education of course.
The idea behind the book is that when you BLINK, a lot just occurred in your mind which you may not realize. This book is about realizing what just occurred and how to take advantage of it.
Amazon.com: Blink: The Power of Thinking Without Thinking: Books: Malcolm Gladwell
This is a must read book for investing, business, decision making, and most importantly, LIFE.