There is no luck involved.
I'm confident it will work for you as well. But it's a really hard process to get to this maximum stretching force, and to maximize the amount of bundles you are doing in each stretch. More bundles == more tissue is stretched and elongated.
The key is to get maximum temporary elongation after each session, since this will promote the fastest length gains possible. Doing Dynamic Bundle Stretches of 5 minutes each, I have found optimal to get this maximum temporary elongation. The key is to stretch your entire penis including your inner penis. You do this by fully relax into the stretch (reverse Kegels).
*Disclaimer: Your results can vary.