OK, good thing to notice.
To my understanding, born again is when we accept by faith the Lordship of Jesus, and the power of His resurrection. God grants us righteousness for believing His message to us, and, being now justfied, He then generates a new being that didn't exist before, yet strangely identifiable to me as "me". But not me. A new me.
God mystically joins me with Jesus on the cross, and we both die together. I then am buried with Him, and resurrected with Him, old life dying, new life beginning.
My new life is characterized by God having united me to His, so that He can say things like,
Romans 8:15 "For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father."
By His Spirit we cry, Abba, Father. Is it His Spirit or me crying out? I can't seem to separate the two.
"yet I live, yet not I, but Christ lives in me" ~ is it my life, or Christ's life? Both, inseparably joined. In unity with God.
Before Jesus died and rose, if you kept the law, you lived by the law, and the Holy Spirit was not in them, but was upon them, and may come and go. Those who died went to Sheol, in the heart of the heart, because you cannot enter heaven unless you are born again. But now we are already in heaven, being born again.
Perhaps that will better explain what I mean.
Much love!