Power of silence
The Bhagwad Gita also highlights mauna as a spiritual austerity, emphasising both verbal and mental silence. Observing our thoughts without attachment gradually calms the restless mind, leading to heightened awareness. There are various forms of mauna: Karna mauna: control of speech; Kastha mauna: maintaining a neutral expression in every way; Susupti mauna: clearing the mind of doubts, recognising life's transient nature and the role of the three Gunas, Sattva, Rajas and Tamas; and Maha mauna: achieving a complete cessation of thoughts.
Source: indiatimes.com