No time to waste
There is a strong link between happiness and how we value our time. Yet we tend to undervalue the latter, even giving it away for free. As explained here, devaluing time can make it easy to steal, such as when we pack our own groceries or are kept on hold on the phone.
Perception and pay
How capable we feel in challenging or stressful situations can affect our work and pay opportunities. But because we feel more effective at some tasks, these separate measures of capability interact and combine to determine overall performance.