Talking to yourself is healthy. Healthier than people who drink soft drinks or smoke cigarettes. People all over the world self pep talk or self motivate. No one is pretending “other people are me talking to you isn’t healthy.” You are not that important. Let people vent and get things off their chest. It’s not your place to Judge. Pretending you have a Ph.D in Psychology or are being a jerk is not healthy for you or your relationships.