When working with English language learners, it is important for the teacher to understand the importance of reducing the student's affective filter. The goal of an English language learner's teacher is to present comprehensible input and ensure that students effectively acquire the language (Steward, 2010, p. 4). While researching second language learning, Krashen recognized three personal issues that influence the success or failure of English language learners. These issues are said to be motivation, self-confidence, and anxiety (Zafar, 2011, p. 144). In order for an English language learner to acquire a second language, it is up to educators to do whatever is necessary to ensure that personal issues are addressed. Krashen believed that a high affective filter can prevent comprehensible input from reaching the language acquisition device and lower sensitivity. the affective filter allows the acquisition of input. He also states that this affective filter is not present in the acquisition of a first language, but only of a second language. Comprehensible input cannot be useful if the English language learner's language acquisition device is prevented from profiting from it. The filter goes up when the student feels unmotivated or lacks the necessary confidence and goes down if the student does not feel anxious and is motivated to become a member of the group (Du, 2009, p. 162). is to find ways to use the ideas of Krashen's hypothesis to help English language learners acquire their new language. As educators, you need to know your students and understand what motivates them to learn. Students may not be motivated to learn due to a lack of interest or confidence in their abilities. Sometimes a teacher's attitude can affect how a student learns, and educators need to be aware of how their attitude could hinder a student's chances of learning a new language. (Du, 2009, p. 164). Teachers need to be aware of their own attitude and how they are portrayed when teaching new things to students. If a teacher doesn't seem interested in students learning, it doesn't help motivate them. By introducing a diverse teaching method and using positive and fun language, teachers can “create a harmonious and light atmosphere for learning”. (Du, 2009, p. 164). Another way teachers can help students learn English is to help them build their self-esteem, thus reducing their anxiety..