We often try to make excuses for being annoyed. We say it is due to weak nerves [i.e., stress] or because we are “down.” But irritation and annoyance come from our evil hearts and ultimately do not have anything to do with fatigue or weak nerves. Having weak nerves or being overworked just brings out what is really deep down in our hearts. When we get into such situations, we have no reason to excuse ourselves or even to pity ourselves. But we have every reason to repent and to call upon the name of Jesus. In this way we will be set free from these evil things that come from our hearts, are expressed by our tongues, and disrupt the peace.
Source: Called to Community