If I hadn’t saved that pig, I would have felt terrible.” The story points out that, sometimes, happiness is nature’s way of telling us we are doing the right thing. True. But, by the same token, ephemeral feelings of happiness are not always reliable indicators we are on the right path. Ultimately, life satisfaction requires more than just happiness.
Sometimes, difficult choices can open the doors to future opportunities, and the short-run pain can be worth the long-run gain. Just as importantly, life satisfaction requires an ethical framework. Everyone needs such a framework. In the short run, it is possible that doing the ethical thing will make you feel, well, unhappy.