The urge to tinker.

When you build an elegant strategy, when you have a system that works, don't interrupt it. Don't get tempted by the short term exceptions.

They seem harmless but they are not. They mess with the system.

Many times, in order to achieve our goals, we need to resist the urge of tinkering with the system and let good things happen to us over time.

As Charlie Munger used to say, don't interrupt the compounding unnecessarily.