Kudos to you.
I changed my habits and retrofitted my home with insulation, solar-water heater, awnings and a rain water collection system (with a mains pressure pump). More recently I've added a 1.5kW solar system, with the money put up by the electricity retailer (on a two-year interest free loan).
Because I had my own consumption down to such a low level before I went solar, I find that my system generates twice as much electricity as I use. The system will be paid off in two months, and I'm currently sitting on a $600 credit with the power company.
These things are achievable now, and you don't need to live like a cave man to do it.
I have whole of house air-conditioning, space-heating, computers, television, internet, etc.
Individuals can make a difference with a little bit of thought.