This research deals with a vital topic where every society wants to progress, develop, and keep pace with other societies in reforming the individuals who live in the devotional aspect through the practical application of some acts of worship in their lives. The most important of which is the night prayer, in particular, and the remembrance of God Almighty. Besides, these are positively reflected in achieving human development of all kinds, as clarified by the Holy Qur'an in the verses urging to do the two acts of worship and what the purified Sunnah of the Prophet brought in confirmation, report, statement, and detail for what those verses came with evidence. The research was divided into two sections, the first contains a statement (reforming the individual, human development, the Noble Qur'an, and the Sunnah) in language and terminology, and the second topic is an applied study of some Qur'anic verses and prophetic hadiths in two demands. The first is urging the night prayer and its great impact on reforming the individual, and the second urging the remembrance of God Almighty in an absolute manner with its impact on the reform of the individual, as this achieves progress for the society whose members are reformed.
Keywords: individual reform, human development, Quran, Sunnah, objective study.