To work on your self
One way to work on your self is by being present in the body. Another way is by expanding the heart. A third way is by quieting the mind. The wise person finds a way to work on all three at the same time.
This place where the two seas meet is the locus of the mystical journey, "where the dead fish becomes alive," where spiritual teachings become a living substance that nourishes the wayfarer. When we meet the path, this happens: something becomes alive within our heart and soul. We become nourished not by spiritual texts or teaching, but by direct transmission. The spiritual journey is a way to live with this spiritual substance, to be burned by its fire, to be consumed by its love.