I have found through experience that the most essential thing a Realtor can do is find out the specifics a person is looking for in a home. It is essential that you listen when a person tells you that they need a 3 bedroom 2 bathroom home at the very least. That way you do not waste your time in showing them potential properties with 2 bedrooms and 1 bathrooms.
Some of the questions that I ask buyers is what are you definite needs in a home. After they tell me, then I ask them what is their list of wants or desires. I then try to find a home for them. I keep this home within the price range and necessities that they specify. If I do not do that, then they will look for someone else.
The best advice I can give to any Realtor is LISTEN to your client. As everyone knows buying a house is extremely stressful, and a Realtor can make this process really smooth or really difficult, depending upon whether they LISTEN to the client or not.
This not only can help your reputation, but can build you client-base with referrals from satisfied customers. My rule is that the customer is always right. They are the ones that have to live with the house and you want them in something that they can be happy in for a long time.