If there is one fundamental coaching tip that underlies all others, it's this: ask questions. Not just any kind of questions, of course, but open-ended questions, questions that do not end in a yes or no answer. Instead of telling people what to do, ask them what they think they might do. Instead of telling people how to feel, ask them to share their feelings.
Questions are a kind of an invitation, a welcoming from one person to another. They say, “You matter to me. What you think, or say, or feel truly matters.” Of course, there's one part to asking questions that is an important part of the process. Remember to listen for the answers!