You may experience a moral conversion, going from being immoral to being a moral person, but, if you have not availed of the payment for your sins provided at the cross of Calvary, through faith in it, you are still a guilty soul.
The Bible says: " ... without shedding of blood is no remission of sins." Heb. 9:22
It's not our moral conversion that takes away our guilt. It's the blood of the Lord Jesus Christ