They have a plan for achieving those goals. They have a desire that motivates them to continue working to accomplish those goals. A leader's ability to convey confidence and his ability to communicate effectively are similar. Both require action on his part and a response from the follower. Liking people is the beginning of the ability to communicate.
Good communicators focus on the response of the person they're talking to.
Good communicators also read body language. A good communicator has the ability to set a person at ease. Most people who are being straight with you are willing to look you in the eye. A smile overcomes innumerable communication barriers, crossing the boundaries of culture, race, age, class, gender, education, and economic status. To be leading, by definition, is to be in front, breaking new ground, conquering new worlds, moving away from the status quo.