This encapsulates the fundamental Stoic insight about suffering - it's created not by events themselves but by our judgments about events. A rainstorm is neither good nor bad until we decide it's ruining our picnic or nourishing our garden. Loss of money is neutral until we judge it as catastrophic or liberating. The revolutionary news is that these assessments are under our control and can be changed instantly. This gives us tremendous power over our emotional state and life experience - we can choose to interpret events in ways that serve our peace and growth rather than our fears and limitations.