It’s easy to speak without thinking, leading to unintended consequences. Before you release words into the world and into other people’s ears, consider what you want them to accomplish. If you want to change another person’s mind, or to help them understand something, or to elicit sympathy then stop to consider if what you’re about to say actually will accomplish that or if you should tailor your communication.
Conversely, sometimes speaking is more about releasing something that is bottled up inside of you and less about having a specific impact on another person. If that is the case, consider if you want to do that next to someone whose relationship you value, or somewhere else, possibly alone.