The more emotional a subject becomes, the more carefully language should be chosen.

As the emotional weight of a subject rises, the tolerance for imprecision drops. In a calm discussion a clumsy phrase gets past; in a charged one it becomes the thing that is remembered. That is precisely when people speak most carelessly, because feeling is driving the speech.

Slow down in proportion to how much a subject matters. Fewer words, chosen more deliberately. If you cannot manage that yet, say you need a moment. A pause in a difficult conversation is far cheaper than a sentence you spend the next month explaining.