How'd you like the book? What all did it address?
I got Getting Things Done because I was becoming overwhelmed by all of my projects at work. A co-worker recommended the book and it was really helpful, I am more organized and I use my time more effectively. Basically what the book teaches you is how to do things in the most efficient way and how to get things out of your head and into an organization system so that you aren't constantly stressing over them. The system works, but it takes a chunk of time to set it up which can seem daunting when you have 100 other things to do. Also, many of the methods were overkill for what I needed so I made adaptations. The book has kind of a cult following so if you search on google you should find tons of stuff, 43 folders was the site I found most useful.