What you are describing is more like "humility" rather than shame and guilt though, in line with:
>Matthew 7:5 [Thou hypocrite,] first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother's eye.>>66393
is pointing in the right direction that catholics have a weird fetishistic relationship with sin, which leads to a viewing sin as a forbidden fruit that is cyclically indulged in and abhorred.
In fact I wonder how that came about to be justified theologically, considering
>Matthew 5:30 And if thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.
to me reads like an imperative to resolutely do away with sin rather than abuse God's forgiveness by feeling guilt or shame about one's sins.
Though the protestant view of an insurmountable eternal sin is also weird to me if it's driven to an extreme, after all the New Testament does stress forgiveness and repentance
>John 2:2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.