This paper presents the results of an Action-Research cycle conducted at Universidad del Valle, which aimed at fostering learner autonomy in freshmen from a foreign languages program, within an English course. The study established the freshmen's entrance profile regarding learner autonomy, and implemented a course based on the development of autonomous behaviors. Finally, an exit profile was established to measure the impact of the intervention. The results show significant progress in the development of some behaviors and suggest that this type of initiatives need to be planned in a long-term basis.