What is the sweet lemon effect?

In frustration psychology, people regard the phenomenon that individuals try their best to improve the value of their achieved goals in order to dilute their inner anxiety when they fail to pursue their expected goals, so as to achieve psychological balance and peace of mind, which is called the sweet lemon effect. This term comes from Aesop's fable: A fox wants to find some delicious food, but he can't find it. I really had to do it, but it said, "This lemon is very sweet, just what I want to eat." This self-comforting phenomenon that only lemons are sweet. Some people also call it sweet lemon psychology or sweet lemon function, the essence of which is the same. They all aim to turn malignant stimulation into benign stimulation, so as to achieve self-psychological balance and avoid self-distress and pain. This, like the sour grape effect mentioned above, uses some "rationalization" reasons to explain the situation when the goal you are pursuing fails, so as to achieve the purpose of inner peace and psychological self-help. The only difference is that the sour grape effect is to reduce the target value pursued, while the sweet lemon effect is to improve the target value achieved. It can be seen that these two effects are the result of using self-defense methods. Sometimes, this effect really plays a role in comforting yourself, accepting yourself, acknowledging the reality and enjoying yourself, which is many times better than depression, complaining about others and confronting others.