On empathy & shielding ourselves from "bad vibes": This is a question that comes up frequently, and my take on empathy is different from some others' in the healing arts. I came to this understanding over many years through the wisdom of my own heart. I sincerely encourage you to access your own heart wisdom on this and listen what it has to say ;-)
In the Coherent state, we become much more resilient and move from quick judgement to a much wiser version of discernment. Discernment allows us to realize that the "bad vibes" and negative emotions are evidence of a person being in fear, pain, or desperation. Dropping into the heart allows us to shine the Light of Compassion on the person we're interacting with.
Approach these questions with gentle kindness. Dropping into the heart allows us to shine the Light of Compassion on ourselves as well.
The messages you'll hear from your heart may surprise you; I encourage you to write them down. While many complex situations can't be fixed quickly or easily, the wisdom of your heart will always lead you to the next step, and it's always there for you to refer to.