Purpose: This article examined Serat Tasawuf, a manuscript written using Pegon script in the Sundanese language. This manuscript, a collection of the National Library of Indonesia, is important to study because it contains three accurate recipes for those who seek happiness in this world and the Hereafter. Methodology: By using descriptive-analytical methods, the contents of the manuscript were then engaged with psychology, especially with the theory of personality developed by Gordon Willard

more »

... lport. Main Findings: The results showed that the contents of the Serat Tasawuf manuscript indicate a need for the formation of a mature personality that must begin in the first phases after birth. It also requires each individual to have an understanding of the basic tasks and functions as worshippers as well as social beings. Each individual must be directed to "learn to be themselves" and "learn to live together". Implications/Applications: The content of the Serat Tasawuf Manuscript provides an understanding of the basic tasks and functions as worshippers as well as social beings. Thus, each individual must be directed to "learn to be themselves" and "learn to live together". Novelty/Originality of Current Study: Since the beginning of its presence, the Islamic texts have formed a cultural identity of the ethnic diversity of the people who produce them. There are many other religious texts in the archipelago that are connected to Islamic thinkers in the Arab world. This study has explored the Serat Tasawuf manuscript, an ancient manuscript that was born in the Sunda region, West Java. This study highlights guidelines for those who are in search of happiness in this world and the Hereafter.