By request, here is the Prayer of Joseph the Visionary that I mentioned in the "rappin with Gabe" post. Its from the Greek Orthodox tradition. I sometimes sprinkle some hyssop water on myself when saying it.
Cleanse my hidden mind with the hyssop of your grace
For I draw near to the holy of holies of your mysteries
Wash me from all my understanding of the flesh
and may an understanding of the spirit be mingled with my soul
Cause to reside in me a faith that percieves your mysteries,
so that I may percieve you as you are, and not as I am.
Create in me eyes that I may see with your eyes,
what I cannot see with my own
My every bodily image be wiped from my minds eye
and may you alone be recognised before the eye of the mind.