If you interpret these sayings as “just wait around without doing anything and the problem will fix itself”, then you’re missing the point. The point is that everything is always changing, and that includes the situations in our lives and how we feel about them.

When you’re at the bottom of a slump, it often feels like it’s going to stay that way forever. But this feeling is an objectively false view of reality. Reminding yourself that “this too shall pass” can help to cut back on the despair and allow you to focus on taking steps to prepare/help the healing process rather than just giving up because it’s pointless, life is suffering, God is a lie but the Devil is real, and everything will suck more and more forever.