I was really into the German language. I was learning it for about 2 years and achieved B2 (Upper-Intermediate).
But, you know, I am not really into the German mindset. As soon as I find some penpals/native speaking friends, I cannot stay with them for long. My native German friends are really of a different mindset… Something from German culture, traditions, worldview prevents from progressing and building up my critically crucial German language skills. A typical German type of thinking, you know, like accuracy, rationality, a bit non-standard laws (like typical German laws for ALL kids to go to school, or forbidding any punishment for kids, or possibility to listen to/play some music only at certain hours).
You know, I noticed that I really like to play the German language, not to learn that. I cannot pick up true language skills. The applications, games, sites, podcasts, textbooks, audiocourses for learning German are really good. But this is all so superficial. I believe, an unability to feel the typical humour, traditions, culture, habits, worldview, type of thinking, laws, standard of the language you start to learn is the key for a language learning failure. :-(
Language hacking is critically dependent on your love, your passion for the culture, mindset and traditions of the country which language you learn…