At home this week, I got an invitation to one of Dale Carnegie's sales training courses. Tucked inside the invitation was a business card-sized primer to his Selling Success Spiral and questioning model. The little card is useful enough on its own.
Selling Success Spiral
The questioning model also offers tools you can use:
As-is questions help determine the current situation of a potential customer
Should be questions create an image of a possible buyer's optimal performance
Barrier questions address issues that may be keeping them from achieving their optimal performance
Payout questions help identify how a company or team will benefit from the services you offer
How does this map with your experience of the sales process and cycle?