It's not primarily a lifestyle issue, and the problem is no longer primarily developed countries. Per-capita carbon emissions in developed countries have decreased 30% in the past 20 years, and energy demand has remained relatively constant, in fact decreasing slightly in some places due to increases in efficiency. Meanwhile, developing countries like China and India are projected to account for 35-40% of total global emissions in the next decade, far outweighing the impact of individual lifestyle choices in the West.

Of course, people should do everything they can to reduce or offset their own emissions. But the solution is going to have to be societal, keeping up with energy demand by adding more nuclear, solar, and wind to the grid.