1.       You did not properly qualify the opportunity.

2.       You tried to sell them on your value instead of asking them what they value.

3.       You failed to listen.

4.       You did not prove you could solve their problem.

These 4 reasons are really problems that can be overcome with the proper help.  Working with a process improvement professional can help you avoid these problems and help you not only win your next sale, but also increase the value of the sale as well.