This book offers a valuable contribution to the discussion on the complexities of L2 learning processes that pose a challenge to learners. Focusing on the cognitive, affective and socio-cultural perspectives, the papers included provide important insights into the individual's experiences in second language acquisition. This work also addresses social interactions and cultural background, shedding new light on their role in the context in L2 learning processes. It is a valuable resource for anyone interested in understanding the challenges of foreign-language (FL) learning and teaching.