Genesis 4:6-7 NLT “Why are you so angry?” the Lord asked Cain. “Why do you look so dejected? You will be accepted if you do what is right. But if you refuse to do what is right, then watch out! Sin is crouching at the door, eager to control you. But you must subdue it and be its master.”
Something happened when you got born again; you died and resurrected with Christ; you became a new creation; your old nature that was sinful was taken away and the nature of Christ that is holy and righteous was given unto you. Hallelujah!