In teaching EFL, it is essential to consider the every factor that influences language learning proficiency. The key factor is student’s personality that affects language learning process. Different learners have different abilities and these abilities are due to some personality issues. Learners and their needs should become a central part of the language teaching process. Dealing with psychology of the learners and designing teaching methods and activities are secrets of success in language learning and teaching. Actually, the role of personality factors in language learning is an obvious and undoubted issue in modern methods of teaching languages. The focused area of the research described in this book has been becoming an integral part of the educational process.