"Trading in the Zone" by Douglas is a great read.
Contrary to what others have said I found all of it especially the last sections very clear. If you compare it to his first book, 'The Disciplined Trader', which I found slightly abstract, this one has been very clearly thought out.
To me the last book lacked structure. I felt the author tried to be a little too deep when it was unnecessary.
"Trading in the Zone" contains all the points from the first book but with far more clarity.
Good luck.