It is heartless if there is no God to forgive our mistakes. All people feel guilty sometimes, except psychopaths. When we sin and make mistakes, we should feel guilty up to a point. Any religion that does not challenge people morally is betrayed. The love of God is reassuring, but also challenging.
Forgiveness is a radical cure.
God can blot out everything and not remember our sins, if we repent. Like the paralytic we have all known the blessing, sometimes the relief psychologically, of being forgiven by God. As I said last week, it is probably the greatest of the Christian blessings. In the name of the Father and of the Son and of the Holy Spirit.