Having been in sales myself, I know that sometimes all it takes to break out of a slump is the right words of encouragement, the right changes to your approach, and/or the right tactics to add to your arsenal.
To that end, The Customer Collective and Oracle have put together a free e-book: Selling Through a Slump.
This 25-page PDF includes sales tips and advice from 11 pros covering various major sectors: health, law, media, manufacturing, and so on.
While much of the information presented here may seem familiar to anyone who's been in sales for a while, I like the way it's all presented with a beat-the-recession mindset. And, hey, it's free.
I think anyone even remotely involved in sales would do well to nab this helpful guide.