There are many practical steps you can take to reduce your Carbon footprint.
Electricity - Installing solar panels and water heaters, replacing air-conditioners and incanescent bulbs with fans and LEDs, etc.
Food - Replacing (or at least reducing) animal products such as dairy, eggs and meat with plant-based alternnatives can save up to 320 kg a year.
Transportation - Shifting from petrol / diesel cars to bicycles, public transport or electric cars can save up to 2000 kg a year, as well as reduce air pollution.