Nowadays many people in Thailand learn english for second language such as communicate, business with other people around the world. The second language is essential and important for the livelihood of people or human life. Then many family in Thailand, they like to send the children to international school or extra learn in English subject because I think that father and mother must to choose the best thing for their children. So, if you want to successful in learning a second language you must take into consider various factors and try to understand it. Internal factors, external factors and other factors are the important thing that can making you to success in leaning language.