Sociocultural theories consider language learning as a social practice examines students as active participants in the construction of learning processes. This study investigates sociocultural theories' central concepts, which includes peer interaction and feedback, private speech, and self-efficacy. The present study is a case study of twenty participants. The participants for this case study were from different nationalities that demonstrated a unique ability to learn languages long after the critical period. Data was collected through interviews and observations. The participant mentioned about the process and the challenges/opportunities he experienced regarding second language learning. By analyzing the learning practices of other successful adult language learners, recurring patterns revealed similarities, which were then emphasized and elaborated in second language pedagogy.