Abstarct: Having developed foreign language proficiency, some EFL learners experience some degrees of foreign language loss. This study aimed at uncovering techniques applied by EFL learners to maintain their foreign language proficiency. The techniques were extracted from 15 participants’ exxpressions in terms of their success in maintaining their language proficiency. The participants were initially selected through the purposive sampling method followed by snowball sampling to be interviewed by the researcher. Furthermore, one more method, memo writing, was also applied to gather the intended and related data. At last, the exxpressions of the participants were analyzed baxsed on the data analysis method in phenomenology research design. The findings revealed that the uncovered techniques were highly affected by motivation factor with two dimensions of integrative and instrumental motivation. Each dimension of the motivation factor involved different kinds of techniques through which participants have maintained their English language proficiency. Therefore, the uncovered techniques can be regarded as the key to success in the retention of foreign languages proficiency which can be also applied by anyone who cares about the future of his/her language proficiency.