We all have different ways on how we react to pain. Every person has his own version of what pain is and how to react to it. Don't expect other people to hurt less just because it hurt less to you. Mind is very unique. You may think alike sometimes but you can't possibly think the same thing all the time. It's just impossible.
Don't hurt someone with words while you're mad. The moment you're not, you cannot take away the pain your words caused. No matter how sorry you are. Even if you know what to say to intentionally hurt them, don't do it. You don't know how that would affect them mentally and emotionally. You don't know because you're not the one in pain. Hurting them with words has the same pain as hurting them physically. So, don't do both. Sometimes, words hurt more than physical pain to other people. We don't know how they react to pain so don't try to make it seem okay. What's okay with you may not be okay with them. Don't overrate their tolerance by underestimating how they think or react. Please, let's not abuse other people. Let's not feel entitled just because we're important to them. Loving us shouldn't give us the power to hurt them.
We all get mad. We all say bad things when we're mad. But that doesn't mean it's okay to say bad things that can potentially damage them emotionally. Don't be a hypocrite. We know the difference between rudeness and disrespect. Same thing with words. When you're saying rude things, you're saying things that are show you're ill-mannered like swearing, cussing, etc. But when you're saying words of disrespect like telling them how low of a human being they are, like how loser they look, and whatnot, then you're not just being rude and disrespectful but also attacking them mentally and emotionally. There's a difference between, "You piece of s**t" and "You're just sh*tty and everyone thinks you're just like a s**t".
Don't attack the people you love with words. All physical wounds heal but wounds you give them emotionally and mentally might not. As I've said, we all reacts differently to different kinds of pain, same in different kinds of abusive words. We cannot possibly know which or when they're okay with it.
Be kind. Don't feel entitled. Don't use their weakness against them. Don't hurt them. You'll never know how and when karma will strike back at you. You don't know how they suffer. You don't know a thing.