The present study aimed to investigate the probable correlation between cultural identity, cultural intelligence, emotional intelligence, reflective thinking, writing self-regulated learning strategies and writing ability of Iranian EFL learners. The design of the study was quantitative in nature. The total number of participants was 201 graduated and under graduated English language students of BA from various universities of Iran. In order to collect data in the current research, five instruments were used including Cultural Identity Clarity Scale, Cultural Intelligence Scale, Trait Emotional Intelligence Questionnaire- Short Form, Reflection on Writing Questionnaire and Questionnaire of English Writing Self-Regulated Learning Strategies. These instruments were distributed through Telegram groups on the Internet among many English language students. To answer the research questions, Pearson correlations and, Structural Equation Modeling approach (SEM) were used. The final result indicated that, cultural intelligence, reflective thinking and self-regulated learning strategies positively correlated with writing ability. Additionally, cultural intelligence and reflective thinking positively predicted the success of EFL learners on writing ability.