Currently teaching in Philadelphia, amazing authorized Astanga teacher David Garrigues writes, "I don't think enough people realize what kind of fire, grit and intensity it takes to crack the small self open and access the hidden treasure of fearless freedom within".
Whoa - this is love talking - this is true practice talking.
The particularly powerful practice of Astanga yoga can indeed help to provide the fire, the grit, the intensity - and it doesn't have to kill you, but will absolutely make you stronger on all levels of being. You approach the practice on a regular basis. You take it slowly, diligently & steadily. You let it meet you where you are, but with the deliberate practice to reach beyond the current level with each repeated attempt. You treat it as a discipline, not an adventure.
Within discipline and integrity there is freedom. The act of being present lets you abandon your past and embrace your future, whatever may come. Through practice we allow ourselves to destroy the previous iteration of our self, clearing the way to express our true nature, our true self.