My wife works incredibly hard for our family and goes through the day tackling tasks one after the other like her hair is on fire. Most of the time, I can’t keep up with her. She is also incredibly unselfish when it comes to caring for our children. To the point where she neglects herself and her own needs.
Some time after that, she eventually hits the wall. At this point, there is no where to go. She is down for the count in bed with exhaustion, a cold or other ailment that manifests itself from not taking the time to rest and rejuvenate herself on a consistent basis before the fit hits the shan.
She is getting better as her awareness grows of what she needs to stay well, but the train can fall off the tracks quite easily once she looses focus.
We all have the ability to keep our train on the appropriate track, if we keep our self-awareness in check.