The word ‘mantra’ means to transcend the mind. The mind itself looks for impartiality and only then is it able to find peace. The recitation of a mantra is only fruitful if the mantra itself is impartial. Only then, impartiality arises within you. When you dedicatedly recite this impartial Trimantra then your worldly obstacles lessen. Param Pujya Dadashri has offered the Trimantra, with the purpose of creating impartiality, equality, and oneness. This Trimantra is a combination of the Navkar Mantra, the Krishna Mantra and the Shiv Mantra, thus making it impartial.
Read here more on Importance of Mantra: https://www.dadabhagwan.org/path-to-happiness/spiritual-science/auspicious-mantra/