Polite way to negotiate

[John Van Uytven]

I consider myself a numbers person when I look at a deal. 

Which in turn makes me seem not so warm.

I am trying approach a park owner about lowering his price and working on my negotiation skills.

Any advice?

Articles?

Links?

Thanks in advance

[Account Closed]

I don't do warm and fuzzy very well either. The Carnegie book on how to make friends and influence people has great reviews, its a classic.