Most people pursue joy by acquiring what they want. Irvine’s argument is more precise: that strategy is structurally guaranteed to fail.
The hedonic treadmill ensures that every acquisition produces a temporary elevation followed by a return to baseline — and often a new, higher baseline of desire. The person who gets what they want does not become satisfied. They become someone who wants more.
Irvine presents Stoic joy not as a feeling you pursue but as a psychological condition you engineer through specific, repeatable practices. The primary mechanism is not acquisition but the deliberate management of desire itself — specifically, the cultivation of wanting what you already have rather than acquiring what you currently lack.