A primary cause of incivility in public discourse emanates from arrogating to ourselves the role of Judge. On this the Jewish tradition is clear: we are not the Judge. At our best, as my friend pointed out, we may be a teacher.
For too long, the left has focused on building systems of government that are just and fair while ignoring individual sin; the right has focused on individual sin and personal redemption while saying little about just societies.
The mikveh feels a little like the womb. But you can't stay under long, no matter how lovely the sound and sensation of your splashing heart. You have to get out of the water, where the rest of this life is waiting to begin.