I can't tell you how much that does help.
"People often invent their own forms of religion by which they imagine they will please God and 'discipline' themselves. But such things are attempts by the flesh, and although they appear to be wise, they do not succeed in truly mortifying the flesh. that can only be done through the Holy Ghost:"
So this quote is to say that: After repentance, my flesh will at times still have the desire to sin, but my mind/soul/spirit will automatically fight it, mentally & physically? And that it will not be until the filling of the Holy Ghost that these battles will cease?
You see, my understanding/misunderstanding is that one cannot truly repent until after they have put aside all the sins of the flesh. (Kinda like you can't truly repent if you still smoke, or if you still hold hatred or grudges, and so on)
This, as I've heard testimony (not Apostolic) where one told me about their repentance/salvation, but then continue to knowingly sin (maybe due to lack of power of in fighting it but regardless) and when witnessing both, this testimony and then sin, I try not to judge... but I do.