The Aksara (syllable or series of syllables) by which the mind becomes liberated is called mantra. The Aksara is cinmayi (permeated, as it were, by consciousness); it is the sabdaBrahman; it is called the Nama Brahman.
Feel convinced that He will be found in the Name. Have firm faith that the seed that has been buried in your consciousness will without fail grow into a tree. Just as after sowing a seed, it has to be watered and manured, similarly the seed in the form of a mantra will be made to sprout when provided with the necessary nourishment in the form of satsang. As you desire God, be it in a particular form or with out form, so will you find Him.