Advice: people in the advanced countries could reduce global heating substantially and be happier by working less.

In terms of sheer production, we would still have plenty of the things we want if the decrease in production is taken out of the income of the rich.

However, most people can't simply decide to work less. They may be working two or three jobs just to get by, or they may be professionals who won't be hired at all unless they agree to work 60 hours a week. If we want to reduce working hours, we will have to organize politically and take from the rich.