Trading in the Zone by Mark Douglas is a goldmine. It’s worth more than all of my trading books… wait, no, it’s worth more than the amount I lost on the February 27, 2007 market crash!
This book will help you identify your psychological barriers why your trading seems stuck at a certain point, unable to move above a treshold. Reading the book is like having a personal trading coach constantly reminding you that the markets are unpredictable on a trade by trade level, and trading on the basis of following your system will yield consistent results.
I highly recommend this book!