Ask for feedback from others.
When it's all said and done, one of the best ways you can learn to communicate more effectively (particularly with specific individuals) is to ask for feedback. Take some time to speak to those who you communicate with frequently to find out how you can improve on your communication with them. Sometimes all it takes is a few suggestions and you'll be on the road to creating a better understanding with someone else. It's not always easy to ask for feedback, but it's worth it!