I’m not sure if it’s better, but here’s one that works well. Similar to the phrase, “Physician, heal thyself!” another way to say rationalists should win is to say, “Rationalist, improve thyself!”
If you aren’t actually improving yourself and the world around you, then you aren’t using the tools of rationality correctly. And it follows that to improve the world around you, you first have to be in a position to do so by doing the same to yourself.
I would also be interested in hearing more about your take on financial planning.