If you want to be heard, wait for the right time. As Ecclesiastes 3:2-8 puts it " A right time to shut up and another to speak up " It requires patience and observation skills to wait for the right time to start speaking. Sometimes it could be an answer to a question or a reply to a letter, but serving it at a wrong time will be disastrous. Yes, I used that word "disastrous" because ignoring the circumstances will have bitter consequence. Sometimes we feel sorry about what we spoke or wrote under a tiring circumstance. "Oh, I shouldn't have talked like that", then we apologize. Although an apology can turn the situation lighter, the damage is sometimes irrevocable and permanent.
Life is like a river. Let it flow calm. Do good and Enjoy Life!