All final spiritual reference is to be the silence beyond sound. The word made flesh is the first sound. Beyond that sound is the transcendent unknown, the unknowable. It can be spoken of as the great silence, or as the void, or as the transcendent absolute.
At any given time we are likely to have not a single practice but rather a constellation of practices, often with one of them as our primary practice. Others may surround it, each carrying its own special place in our life... As the months and years go by the constellation changes. New practices emerge. Practices that have been present for years fall out of the picture.