First post here so forgive me if its obvious.
I have had some experience over the years of the Tibetan tradition but always found that the practice of Theravadin meditation 'works' best for me. I follow the breath until I feel an extremely deep sense of calm and a sort of quiet never achieved through any other practice. However, when I am in this state my mind always seems to want to meditate on Emptiness in much the same way as I was taught in the tibetan practices; ie. identifying the object to be negated (the 'I') then trying to find it. Ultimately it is of course unfindable thus demonstrating its inherent Empty nature...etc...
My question is this, how can the practices in the Theravada bring about a non-conceptual experience in the same way the above practice does?
Thanks in advance!