Asceticism (noun)

1. The practice of self-discipline and self-denial as a means of spiritual development.
2. The belief that self-denial and spiritual discipline are necessary for a person's spiritual development.

Origin:

From the greek askēsis, meaning practice or exercise, and the suffix -ism, meaning the state or quality of.

Examples:

1. The monk's life was one of asceticism and self-denial.
2. The asceticism of the religious order was evident in the simplicity of their lifestyle.
3. He adopted an asceticism lifestyle to purify his soul.
4. The asceticism practices of fasting and meditation were a central part of the monk's daily routine.
5. The asceticism beliefs were the foundation of the religious community.