I'd say it is a necessary read for anyone who is interested in advancing their career either within an organization or independently. The advice offered in the book isn't difficult to implement, it is essentially common sense and manners. I've read the book about a half dozen times and with each read I gain a little more insight into how to conduct myself professionally.

It's pretty much a universal top 10 book on the subject of general success for people whose top 10 books anyone cares about.

I want to read it, so far I've just used the audio book and enjoyed it, but didn't really focus on it as much as I would have if I had read it.

I'd recommend it as a general life-skills sort of book, which can also be applied toward career success in sales or management. If you don't want to read it, just find the summary online, apply it, and see if your life changes. It's harder to implement than it sounds, at least in my experience.