Recovery prevents temporary fatigue from becoming permanent resentment.

Tiredness that is never relieved does not stay neutral. It turns into resentment toward the work, the people asking things of you, and sometimes the life you chose, and that resentment lasts long after the fatigue would have passed. What began as a physical state becomes an attitude, and attitudes are much harder to reverse.

If you have started to feel a low irritation with things you used to like, treat rest as urgent rather than optional. The bitterness is often just exhaustion that has been left too long without relief.