All of those mean you put your applicants' needs first. In many markets today an abundance of choices face prospective tenants, but they pick one place to live over all the others. For a highly-qualified applicant to decide to move into your rental property there has to be something that sets you and your property above everything else. Often the features are the same, often the neighborhoods are all but identical, often the properties are of equal quality, yet something makes an applicant sign on the dotted line for one over another. The reasons differ for every person, but often it has to do with how they relate to the landlord.
People like to do business with people they like and trust.
Remember, when you are looking for tenants, you are selling them on living in your rental property. You want applicants who are eager to live in your properties. Your job is to help them make the decision that you and your properties are the right decision. Use your own style, but let prospective tenants know that renting from you would be a darned sight better than from one of those unprofessional landlords.