Man is not worried by real problems so much as by his imagined anxieties about real problems.
Epictetus once counselled a merchant paralysed by fear of a failing deal. Rather than solve the issue, the man obsessed over outcomes. Epictetus showed him that his suffering stemmed not from the deal, but from the imagined future he constructed.
Worry exaggerates reality. Calm thought solves problems.
"There is nothing in the world so troublesome as not having troubles."