A blessing is a form of grace; it is invisible. Grace is the permanent climate of divine kindness. There are no limits to it... For one who believes in it, a blessing can signal the start of a journey of transformation. It belongs to the same realm as the inner life— its effect becomes only indirectly visible in the changed quality of one's experience. Where before gravity and deadness had prevailed, there is now a new sense of animation and lightness. Where there was grief, a new sense of presence comes alive. In the wall of blindness a window of vision opens.
~ John O'Donohue,"To Retrieve the Lost Art of Blessing," in TO BLESS THE SPACE BETWEEN US
Mystical prayer is essentially an experience of unity with God and God's creation. Kything is a gateway to mystical experience and can foster deeper prayer states. When you kythe you transcend separateness without losing your identity. When you kythe you enter into a state of unconditional love and spiritual union.
As a hasidic master once wrote about experiencing this spiritual energy while kything with nature:
When you walk across the fields with your mind pure and holy, then from all the stones, and all the growing things, and all animals, the sparks of their soul come out and cling to you, and then they are purified and become a holy fire in you.
~ from KYTHING: THE ART OF SPIRITUAL PRESENCE by Louis Savary and Patricia Berne