The most favorite part I think it’s like when you learn more about the language I mean English, the more of the sparks of joy of cultures that will be found. Language and culture are intertwined.
For the hardest part it’s kind of like walking on the wood, I mean insistence, once you don’t keep on it, you gonna fall from the wood, I think the most valuable features as a language learner that is strong will since I don’t have one, LOL.