Would It Be Fair To Say That Epicurus Taught "Lower Your Expectations And You'll Never Be Disappointed"?

The wording of this doesn't quite work for me. An internal feeling of disappointment happens because a mental expectation was not fulfilled. But if you understand the nature of the world well, you will know which situations come with a higher probability of fufillment and which come with a lower probability, and you won't create unrealistic expectations.

Cassius your statement "Lower your expectations and you will never be dissatisfied" could be compared to this PD:

PD15. "The wealth demanded by nature is both limited and easily procured; that demanded by idle imaginings stretches on to infinity."

The Japanese concept of "wabi-sabi" might be related to the Epicurean "wealth demanded by nature" (in PD15).

From Wikipedia:

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In traditional Japanese aesthetics, wabi-sabi (侘び寂び) centers on the acceptance of transience and imperfection.^[2] It is often described as the appreciation of beauty that is "imperfect, impermanent, and incomplete".^[3] It is prevalent in many forms of Japanese art.^[4][5]

Wabi-sabi combines two interrelated concepts: wabi (侘) and sabi (寂). According to the Stanford Encyclopedia of Philosophy, wabi may be translated as "subdued, austere beauty", and sabi as "rustic patina"....

Characteristics of wabi-sabi aesthetics and principles include asymmetry, roughness, simplicity, economy, austerity, modesty, intimacy, and the appreciation of natural objects and the forces of nature.

-->Source article

Usener 135

Johannes Stobaeus, Anthology, 3.17.24:

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Again from Epicurus: "If you wish to make Pythocles rich, do not give him more money, but diminish his desire."

The question in the thread title is far too broad to be meaningful, but this and other quotes seem relevant.