I can tell you it is detrimental that you give up on yourself, realize your evil and you have to understand why and how grace works.
and have a genuine desire to be a son of God. then the Spirit comes.
Thats what happened to me and I had no preconceived notions of how it all worked before this happened.
I guess God is so good at saving that it seems like it is all about us making a good decision.
I don't understand why a sinner should suddenly feel the necessity of repentance and have a genuine desire of being a child of God.