When People Talk, Listen Completely -Ernest Hemingway
A key to accomplishing this is to develop the discipline not to fidget physically and mentally. Try not to mentally fidget by multi-tasking, such as attempting to prepare a response. Try not to physically fidget by checking your phone,/ answering your phone while someone is talking to you. (Just to note a couple).
Honor them with your full attention. Offering full attention will build trust and will increase the likelihood they will freely offer you more in the relationship.