My working philosophies are: 1) the client MUST be happy, nothing less is acceptable; and 2) meet all deadlines (early, if possible). *CUSTOMER SERVICE SKILLS -Be friendly. The most important rule in providing excellent customer service is to be friendly. ... -Respond in a timely manner. ... -Know your product or service. ... Listen to your customers. ... -Say thank you. ... -Get to know your customers. ... -Ask for feedback. ... -Use the feedback you receive.