"A good man brings good things out of the good stored up in his heart, and an evil man brings evil things out of the evil stored up in his heart. For the mouth speaks what the heart is full of" - Luke 6:45.
Leaders can study the technical side of communications and become proficient in email, podcasting, live streaming, video conferencing, and publishing. Yet the Bible is clear that proficiency in communications is a heart matter, not just a skill matter. If leaders want to produce good communication, they must have a good heart--not a perfect one, but a heart that is open, honest, and aware of its condition and need for the Lord. The spoken or written words that come from a leader's mouth are an expression of a leader's heart so if their heart is confused, devious, wounded, angry, generous, or joyful, then those conditions will come through in what is communicated to others.
LEADERSHIP STEP: What condition is your heart in these days? You can tell by the words you are uttering or writing. If you are not encouraging others, accept that it's a heart matter and ask God's help to get to the root cause. If you're being critical or sarcastic, it's a heart matter and not just a matter of controlling your tongue. Ask God to help you face and deal with your heart, and watch your leadership communication improve.