Make your frustration productive enough that it leaves evidence.

Frustration that stays internal just circulates, and by the end of the day you are tired with nothing to show for it. The same feeling directed into work leaves a trace, a page written, a thing fixed, a call made. That trace matters because it converts the feeling into something you can look at, which is the only way the day feels different from the one before.

When frustration arrives, give yourself a rule that it has to produce something before the evening. It can be small. What matters is that the feeling gets spent on the world rather than looping through you.