What's the one rule you enforce to stop building on weekends and do you actually follow it?

Light one for the weekend, but I'm genuinely asking, because I'm bad at this and I know I'm not alone.

My rule is supposed to be: no code after Saturday noon. What actually happens is I "just check one thing" at 2 PM and surface at 7. The rule exists and I ignore it, which I suspect means it's the wrong rule.

I'm wondering whether the people who actually protect their weekends do it with a rule at all, or with something structural a separate machine, a co-founder who'd notice, a hard commitment that makes building impossible.

So: what's your rule, and be honest do you follow it, or is it aspirational like mine?