Maybe some sort of required social service (beyond the required military), especially in the SK countryside where it is badly needed? Only anecdotal, but I wen

Maybe some sort of required social service (beyond the required military), especially in the SK countryside where it is badly needed? Only anecdotal, but I went from massively introverted to a more-or-less well adjusted social adult after three years in the peace corps (coincidentally in South Korea). My work in a rural health center required me daily to interact with dozens of people who needed me in a language I was struggling to learn. In the process, I grew to enjoy socializing for the first time and have benefitted from the experience ever since.