The only way we can fix anything (maybe) is by getting involved in the primaries. But that's a major uphill battle; I've tried it once. If the establishment R's don't like your candidate they will cheat to keep him (or her) out of the national convention.
We can't limit ourselves to the political process. The rot is just as deep in the people, as it is in the political class. Just for starters, we could all go to church this Sunday. If the fake churches around you aren't open on Christmas, find one that is. Then keep going.
I don't claim to have The Answer to all our political woes. I wish I did. But I intend to keep rebuking despair, even if I keep sounding like a broken record.
No one thought slavery could end. Or the Berlin Wall could come down. Who foresaw the end of Western colonial empires, or apartheid?
We've seen things in our lifetime that were hopelessly improbable. But they happened.