As this is the Swyama Siddha Hanuman Mantra it does not have being chanted for a fixed amount of Mantra Repetitions for being able to utilize it. Specific worship and rituals and rules with regards to direction, sitting mat, and counting rosary are not proposed for chanting this Hanuman Mantra. https://directory-cube.com/listings13048842/about-hanuman-shabar-mantra-get-rid-of-all-problems