Fatal Friday or Victorious V-Day? (John 19:17-42)

When we think about Christ on the cross it is not something that is celebratory.  That means we do not look at this event and celebrate the reality of the promises of God.  The reason why I say this is because Christ has died.  He died on the cross for what?  He died on the cross for our sins.  The disciples are rattled, his followers are rattled, but what has Christ done that is so good?  Why would we call this Good Friday and not Fatal Friday if this is about the death of Christ?  Death means failure right?  Or are we missing something about that?