When people lift heavy loads, they are likely to develop severe back pain. When they realize that they are overtaxing their bodies, they discontinue this practice and from then on will lift only as much as their bodies can safely bear.
While we can easily determine our body's stress capacity, our psychological and emotional stress tolerance is not so readily measurable. Yet, if we exceed that stress level, symptoms of discomfort and dysfunction are just as apt to occur as when the body's level is exceeded. How is one to determine one's safe emotional and psychological stress level?
What could be simpler than following the instruction book provided by the Manufacturer?
During the Israelites' sojourn in the desert, the manna was provided in portions just sufficient for one day, and any excess rotted away.
As for what they would eat the next day, the Israelites had been assured that there would be fresh manna the following day. Our appropriate stress tolerance is to be concerned for just one day - twenty-four hours. If we take on more than that, we may be overburdening the system. In our economy, lacking the miraculous manna and having the ability to save for the future, there may be justification for putting something aside for a rainy day. However, we often take on worries far in advance, about things that we are powerless to alter or to prepare for today. Such futile worry is harmful to a person.