The Ram Ram mantra meaning is deliberately bare: it is the name of Ram, the seventh avatar of Vishnu, repeated with nothing added, no om, no namah, no petition. Tulsidas spends a celebrated stretch of the Ramcharitmanas's Bal Kand arguing that the name is greater than the form it names, since the form appeared once in Ayodhya while the name remains available to anyone, anywhere, in any age.
The tradition of Kashi adds a second layer: there, Shiva himself is said to whisper the taraka mantra, the ferrying name of Ram, into the ear of those who die in the city, carrying them across. And for the nirguna poet Kabir, Ram was not even the prince of Ayodhya but the formless Absolute; his verses use the same two syllables to point past every image. One name, held at once by saguna devotees, nirguna mystics, and Shaiva Kashi.
Mohandas Gandhi belongs to this lineage too. He wrote that his childhood nurse, Rambha, taught him Ramanama as a remedy for fear, and he kept the practice for life, calling it his inner support. His account is worth remembering because it frames the benefits of chanting Ram Ram the way the tradition does, as steadiness under pressure, reported from within a life, not as a guarantee issued to a customer.