If you look at majority of the blogs/posts here, they are about failures/relapses. Just a handful of them are 100% success stories.
You go without PMO for 7,14,21 days....maybe a few months if you try really hard. Eventually you relapse and then what happens? I am not trying to be negative, just realistic.
A few months back, I had an epiphany. It's not rocket science, it's something I had known all along but was stubborn not to implement it.