Many factors will determine your success in life but one of the good ways to be better is to have a good communication skill. I watched a motivational video by Les brown. He said a lot of things and he mentioned "when you open you mouth you tell the world who you are". This looks like a small thing but this is how people validate who you are. There are times people will like you but when they have a lengthy conversation with you the likeness will disappear because of your quality of communication. Do not joke with your communication skill, build it.
Very small content, but filled with powerful words.