The warming we've seen is setting feedback loops that guarantee higher levels of warming. The melting of the Siberian permafrost means thousands of gigatons of methane (more damaging as greenhouse effect than carbon dioxide) released into the atmosphere.
We have to be the first to take personal responsibility for our own carbon footprint. And it's probably not going to be a walk in the park--most other industrialized nations keep energy prices high for a variety of different reasons.