If you want to remain functional during lengthy and stressful life events, it is critical to understand your capacity, prioritize the tasks ahead, seek skilled collaborators/contractors, and forgive yourself for the things you simply cannot do.
When a life-crisis turns into an extended campaign, it is essential to know how to prevent yourself from burning out. Burning beyond that level must be reserved for true emergencies, where the goal is to bring things back into a new balance.
If you're operating beyond your capacity for too long, the endeavor will begin to stumble. That's what the article was trying to help the reader avoid.