Maybe your product is excellent, but your message is not. Instead of focusing on features and functions, focus on what the customer wants.  

If you are talking to people who are interested in listening to you, Maybe you should stop selling and start giving information that will help the customer do his job, solve his problem, fulfill his “want”.

Most buyers have a budget. Maybe they don’t want to spend their budget on your product, but the result of buying your product?

If you know someone with a flat sales curve, tell them about his blog. Maybe it will help.