Understanding learned optimism requires examining multiple perspectives and considerations. Are there any pairs of words like "beloved"/"belovèd", "learned .... When I first read Romeo and Juliet in high school, I remember being intrigued by pairs of words such as, beloved/belovèd and learned/learnèd where there's an accent grave on the 'e' of the last american english - When do you use “learnt” and when “learned .... Is learnt UK English and learned US? I’m used to using learnt, but my US spellchecker says it is wrong. In this context, word choice - "Learned of" or "Learned about"?
This perspective suggests that, - English Language .... When would I use "learned of" versus "learned about" in a sentence? Furthermore, for example: The principal learned of the planned protest and suspended any students wearing the armbands.
Which is proper usage: "What I've Learned" or "What I learned"?. Building on this, what I learned today was that I like asparagus. What I learned during the 2 week course was invaluable. Furthermore, whereas "what I've learned" is more general, or at least refers to a longer time period, eg.: What I've learned in life is to avoid poisonous snakes. What I've learned at college is that kids don't like to learn.
"So I have learned." - English Language & Usage Stack Exchange. This perspective suggests that, 4 Yes, saying "So I have learned" (or, the more common "So I've learned"--thanks, Kate Bunting) is perfectly acceptable. Furthermore, thinking about what a person could infer from hearing someone say "So I've learned," I came to the conclusion that the person saying "So I've learned" is evincing a certain emotion that is hard to characterize. learn how to [verb] vs. Another key aspect involves, learn to [verb] - English Language & Usage .... It's interesting to look at GB for he learned to obey, where it seems to me most of the earlier instances could reasonably be replaced by "he learned how to obey", whereas the more recent ones invariably mean "he learned that he must to obey".
In relation to this, imho it's the meaning of the verb "to learn" that has shifted over time. Another key aspect involves, etymology - If it's incorrect to "learn" someone, then why is "learned .... Learned is an adjective, and implies the past tense.

"He learned" is perfectly valid. By using the word as an adjective "He is a learned man." It implies that He learned something at some point in the past. Hence, the term: "a learned man".
(The origin being something along the lines of: "a well-learned man".) word choice - Self-Learner vs Self-Taught vs Autodidact - English .... I would recommend using ' self-taught ' or ' autodidact ' over 'self-learner'.

Have a look at this ngram: Enlarge Hence literary sources suggests that 'self-learner' isn't been used that very often compared to the others.

📝 Summary
Important points to remember from this article on learned optimism highlight the value of knowing this subject. By applying these insights, you can gain practical benefits.