Make sure you are pricing your products and services fairly to both you and your customers.  Include hidden expenses and an appropriate profit margin that you can invest back into your business and sustain your business health.  Treat customers with dignity, respect, and courtesy so they will want to do business with you.  Demonstrate knowledge in your products and services; always be willing to do the research to provide what the customer needs; develop positive rapport and relationships built on trust.  Manage your expenses so you can cover your business costs and save some money for the future.  I hope this helps.  Let me know if you have other questions.