What trading rule do you know you should follow… but still break sometimes?

Something I've been thinking about lately.

A lot of traders actually know their rules. The problem isn’t knowledge — it’s execution in the moment.

Things like:

• entering too early
• overtrading
• revenge trading
• closing winners too fast

I'm curious: what would actually help you stick to your trading rules more consistently?

Is it structure? Journaling? Hard limits? Something else?