How to get the most out of Poker books

Hi all.

I have just picked up The Psychology of Poker along with HOH and Killer Online Poker so my hands are full right now. I'm trying to establish a diverse collection of poker books for a well rounded game.

I was wondering if you guys have read The Psychology of Poker or any of the other books I have mentioned. If so, how have they helped you? I personally find it very easy to read these books, but not particularly easy to remember or apply what I have read. I want to get the most out of these books and I just thought I'd ask your opinions on them and how you've managed to take what you've learned and apply it directly to the poker table.

I guess I'm basically just curious if reading a Poker book has dramatically improved any of you guys as Poker players. Am I wasting my time and money or can Poker books realistically make me good enough that these books will pay for themselves in the future? If any of you have genuinely benefited from Poker books, how did you go about getting the most from them?

I apologize if this is off topic. Thanks in advance for any input.