basic on the finding and discussion in this thesis, the writer found that the most important factor influence be succeed in speaking ability was high motivation to speak was 36%%, the most important factor influence to fail in speaking ability was lack of self-esteem in speaking was also 36%. meanwhile, factors that influence students to succeed in speaking ability were: intrinsic motivation was 44%, risk taking was 68%, emphaty of students of english and literature department was 60%. willingness to communicate of students of english and literature department was 52. and the last, self-esteem with 56%.