Om is the right mantra with which to start working towards japa meditation. Get started with Om and see where it takes you. ज्याचीया स्मरणें पतीत तरती तो शंभु सोडू नको ॥ ३१ ॥ He spends A lot of his time in deep meditation as he gains spiritual strength. https://shrikrishna88630.estate-blog.com/21750346/lord-shiva-fundamentals-explained