"Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things."
Hearing someone always speaking as though they must share the "honest truth," which is normally not kind, I'm reminded of the above. I too will put a bit more negativity into my speech, which needs to be toned by the good in life, not the hardness.