This document discusses factors that influence success in learning a second language, including age, gender, motivation, and learning styles. Younger learners may have an advantage due to brain plasticity, and research shows girls often outperform boys in language learning. Motivation is also crucial and can fluctuate over time, requiring teachers to generate initial motivation, maintain it, and encourage positive reflection. Finally, the document outlines different learning styles such as visual/auditory preferences and levels of extroversion/introversion.