Reducing one’s C footprint means that every individual should be vigilant to reduce his/her usage of the Carbon intensive activities – the most significant being the electricity. Thermal power generation accounts for a maximum of the carbon dioxide release into the atmosphere and thus climate change.
When the electricity usage is reduced it not only reduce your power bills, but you are also making the coal power generation turbines to rotate less and hence lesser coal burning there.
Earth Hour is one such initiative which asks the contributors to shut off the lights for one hour once a year to save enough of electricity around the world. Just be a part of it and feel proud!