How can I be assured of my salvation now if only 'he who endures to the end shall be saved'?

Ted asks about assurance in light of Matthew 24:13, when we don't feel like we're enduring. Rod talks about the struggle being typical for sinners who are sensitive to their inner disobedience and their disinclination to Christ, but then speaks of good news for such people, including confirmation of what believers faithfully do in their vocations every day.