How do I communicate effectively with other?

Now days,there are lot of young fresh graduated are jobless. It causes of the youngster do not know how to communicate effectively. Actually, this weakness can be avoided if they are learning how to speak carefully. Before this, I also got a problem to speak effectively. But now, I have overcome that problem. Here, I want to share with all of you how the ways I overcome that problem.
Firstly, whatever happen don’t be nervous and try to calm down. If you are nervous, you couldn’t think positive and properly. Sometimes, you are says something ridiculous that make your listener become confuse with what you are saying.
Secondly, use a body language to convince to the listener. Sometimes with a body languages or your body movement can make listener confidence with your speech and at the same times, they will understand with your speech. Meanwhile, use a simple word just straight to the point until you make confusing to listener.
Thirdly, try to prevent from prejudge somebody because it’s annoying and take a time to thinking fastly before you say the word. It does can make you speak nicely. Besides that, don’t laughing while you’re talking with someone because it’s can make the people feel not comfortable with you.
Lastly, don’t say something can annoying someone with sensitive words. For example, you are using sensitive words for that race, such as you are said “keling” to Indian boy.