To have true contrition whatsoever we must above all have a firm purpose of amendment, meaning we have all desire to never commit sin again (at least mortal sin). We must desire completely never to commit any mortal sin ever again. If we do not have this (whether we have fear of Hell or pain for offending God), we are not forgiven. However, to have a true pain for offending God, as I wrote on the previous thread, is a rare case indeed. As I also said before, it has been likened to the rareness of a plenary indulgence. St. Alphonus Ligouri had a vision one Sunday while preaching at Mass on plenary indulgences that if everyone fulfilled the obligation for a plenary indulgence (except that of freedom from desire of all sin, including venial) that was present at the Mass, that even then, among tens of thousands, only he and one washing woman would actually earn such an indulgence. That is why we cannot have any good hope that a person who dies without the Sacrament of Penance in a state of mortal sin will be saved (we should have almost as little hope as if they were not Catholic). Of course, we can have more hope, for outside the Church one cannot be saved. In any event, we must always attempt the best we can to excite compunction for our sins, and we should avail ourselves to the Sacrament of Penance often. God bless.