Universal
If it's universal law, you can't break it.
Like gravity, you can tell a story that you defy it;
at most, you only ever harness it, when you seem to overcome it. You are slave to it entirely, you MUST account for it relentlessly, as it relentlessly applies itself to you.
What is unsustainable does not sustain.
The way that your relationships reliably fall apart is evidence of integrity.
Integrity applies as ruthlessly as gravity, and the two go hand in hand, structurally.
The forces of matter obedient to gravity cause a structure which is unstable to collapse, and to go on collapsing, always in pursuit of integrity, a settled pile.
It keeps falling down until it is built right.
True and perfect specification!
Learn the ways of sustainable relating.