The aim of the current study was to investigate positive thinking in Islamic spirituality and to develop a theoretical model based on Islamic view. Methods: The research method in this study was based on qualitative approach. The study used a content analysis design with a hermeneutic approach to collect and analyze the data. In order to do so, sacred texts especially Holy texts (i.e. Quran and Ahl al-Bayt’s performance and oral tradition) were reviewed through hermeneutic understanding. Results: Findings demonstrated that positive psychology in Islamic spirituality mostly centers on the following topics: Islamic positive view of human, believing in Divine benevolence, gratitude, Tawakkul, and universal man. Also, based on the attachment theory, positive thinking was interpreted and its applications were explained for individual’s thinking about past events, interpretations of present events, and future expectations. Positive thinking in this paradigm was discussed in a way that included individual’s relationship with transcendental beings, others, nature, and self. Conclusion: The Islamic approach is very optimistic about human nature and its capacity for growth. It is also optimistic about the relation of human beings with God. The fourfold relational paradigm of positive thinking in Islamic spirituality has been accepted as a base for all relations. Approaching this paradigm and orienting thoughts, feelings, and actions towards this view may be achieved through an ontological gnostic worldview.