Listen - People want to know that they are being heard. Really listen to what the other person is saying, instead of formulating your response. Ask for clarification to avoid misunderstandings.
Who you are talking to matters - Effective communicators target their message based on who they are speaking to, so try to keep the other person in mind, when you are trying to get your message across.
Body language matters - It's important for face-to-face meetings and video conferencing. Make sure you appear approachable, so have open body language.
Check your message before you hit send - Spell and grammar checkers are lifesavers, but they are not foolproof. Double check what you have written, to make sure that your words are communicating the intended message.
Be brief, yet specific - For written and verbal communication, practice being brief yet specific enough, that you provide enough information for the other person to understand what you are trying to say.
Write things down - Take notes when you are talking to another person or when you are in a meeting and don't rely on your memory. Send a follow-up email to make sure you understood what was being said during the conversation.
Sometimes it’s better to pick up the phone - If you find that you have a lot to say, instead of sending an email, call the person instead.
Think before you speak - Always pause before you speak, not saying the first thing that comes to mind. Take a moment and pay close attention to what you say and how you say it. This one habit will allow you to avoid embarrassments.
Treat everyone equally - Don't talk down to anyone, treating everyone with respect. Treat others as your equal.
Maintain a positive attitude and smile - Even when you are speaking on the phone, smile because your positive attitude will shine through and the other person will know it.