Principle 39 · from the Enchiridion
Know what is enough
Comparison can keep moving the meaning of enough. Decide what you actually need before chasing the next upgrade.
Source passage (English)
The passage is shown in English. The explanation and example below are modern interpretations for this site.
The body is to everyone the measure of the possessions proper for it, just as the foot is of the shoe. If, therefore, you stop at this, you will keep the measure; but if you move beyond it, you must necessarily be carried forward, as down a cliff; as in the case of a shoe, if you go beyond its fitness to the foot, it comes first to be gilded, then purple, and then studded with jewels. For to that which once exceeds a due measure, there is no bound.
What this means
Epictetus points out that our needs have limits, but wanting more does not. Once "enough" depends on comparison or status, the finish line keeps moving.
His example is a shoe. It needs to fit the foot. Once display matters more than use, there is no obvious place to stop.
Comfort and beauty are not the problem. The problem is a desire that never lets us arrive. Knowing what is enough makes trends and social pressure less able to direct us.
Try defining enough for a particular need before comparing options. A purchase may be worthwhile because it solves a real problem or brings enjoyment you can afford. The question is whether you chose it deliberately, or whether someone else's upgrade quietly changed your standard without changing your needs.
An everyday example
The device you own still works well. After seeing the new version often enough, though, it suddenly feels inadequate.
Before buying, ask what is actually missing: a function you need, or a better feeling when you compare yours with someone else's?
Reflection Question
Where does "enough" keep moving just as you are about to reach it?