You will obtain everything only thru the Guru Pādukā mantra. Without Guru Pādukā it is like groping in the dark. It offers you light and direction to succeed on the path of spirituality.
Out of all mantras, Guru Pādukā is most important. You can let go all the rest, beside that one.
Pādukā means the sandals that the Guru wears. If you can wear sandals, the sandals know where to go. The Guru may be there or may not be there, but the Guru Pādukā mantra takes you because you wear them, they know where to take you, how to take you, they are used to going with him (Guru).
Guru Pādukā mantra always stays with you, other mantras can come and go but this always stay with you. You dissolve into that, you become that, I become Śiva. It’s supposed to take you all the way up from root chakra to the brain and keep you there. Don't get worried, to get all mantras. Just chant the Guru Pādukā, it itself contains mantras of many deities and fills the world.
You want me always be present with you? Then you have to chant the Guru Pādukā mantra all the time.
– Śrī Amritananda Natha Saraswati
