In thinking through solutions to life’s vast problems, sometimes the best answer is the most obvious. 

“Sooner or later we spend what we earn. So if want to consume less we must earn less, and if we want to earn less we must work less. At least, we must perform less paid work. If that sounds shocking today, it is nothing more than a call to resume the great historical trend of declining working hours. Until the trend was disrupted in the 1980s, falling working hours were regarded as the surest sign of social progress. A return to the downward trend would mean a social choice to take less of the gain from productivity growth in money income and more in free time.”

– Clive Hamilton, Requiem for a Species: why we resist the truth about climate change (Sydney: Allen & Unwin, 2010), 86-87.
From Nothing New Under the Sun (thank you).