Relationship

one think you know for customer is "customer always good for spend"

Develope friendship with customer. Show love care with them. If they did any wrong advise them seperately not before with others. Accept their good ideas and thoughts.

Customer relationship can be hard or easy. You have to understand that the customer's welfare must always comes first. The customer is always right. You can develop this in time by meeting and dealing with different kinds of people. That way you can easily know on how to deal with different type of customers.