I guess that is a loaded question.  Your business can be failing for many reasons:

• Did you start a business doing something that you have a passion for
• Are you constantly researching and trying to make improvements to your business
• Are you marketing effectively (not all marketing is effective marketing)
• Do you have an online presence
• Does your website look professional
• Are you concentrating all your efforts on affiliate marketing (you shouldn't be)
• Do you have your own product
• etc...

Answer these questions and you will get closer to an answer to your question.