Why can’t you believe the fast started? You had a whole year to prepare for it.
Yidden obviously didn’t have enough zechusim, so HaShem decided to re-destroy the Bais HaMikdash. Obviously a lot more of our efforts is needed. In areas each person himself/herself knows best. And then there’s the generalizations brought down in numerous seforim, most common / publicized being the Ahavas Yisroel chinam.
I don’t know about you, I’m not at all surprised it wasn’t built this year. No – I have much, much more fixing up to do. In all areas, unfortunately.
But I’m trying… maybe next year…