Ahhh, the Double Edged Sword...let me tell you what this concept feels like from my angle. The ultimate question becomes, "What can we focus on to guarantee that we understand Guru ji’s instruction to chant the sacred name of God, the Nam, all the while continuing to live in this world?" This conundrum becomes the litmus test for a deeper level of spiritual understanding. It turns out that the answer to this question is as sharp, as narrow, as disciplined, as is the edge of the sharpest double edged sword.
Repeating the Nam is pure discipline. At least it has been for me. There are many chances to not see results quickly enough, so many quit.