To do

You personally could:

Put on a pulli to keep warm

Change to energy saving bulbs and never buy any incandescent bulbs ever more

Reduce your farmed meat eating (or turn veggie if you like)

Shower shorter (and with a an efficient shower head)

Drive economically. Get a small fuel-efficient car

Use public transport, and bike if possible

Order groceries via internet, which are delivered to you with one truck, instead of all individuals driving to the supermarket

You could do the following larger investments:

Lower temperature in your house or flat (spec. when not at home, there are regulators that lower T during certain hours)

Solar heating on roof for warm water

PV on roof if you decide to pay the additional cost (energetically the manufacturing pays off – you’d get independent for electricity supply as advantage)

For society following has been suggested, with a reasonable energetical pay-off (economically less clear, ofcourse. That’s probably why regulation is necessary):

Start working from home with an internet connection

Shift transport of goods from trucks to ships and rail

Currently, only about 1% of the energy in gasoline is used to move the occupant of an automobile. Most energy is lost to engine inefficiency, friction, aerodynamic drag, rolling drag and acceleration. Ultra-light cars made of strong carbon-steel composites may double efficiency of automobiles. Hybrid automobiles, available today, allow the engines to run more efficiently and also nearly double the efficiency of gasoline usage.

Newly constructed buildings should be built as energy efficient as possible (more insulation)

If you are against regulation (me too, often), wait for energy prices to go through the roof (ohh, let that happen sooner than later), and then the above suggestions will come through market forces. However I fear that we will f..k up the economy as well as the climate the next ten years irreversibly if we don’t set the frames for a sustainable society now. When the oil is out, burned wastefully, we will say “oh, now we don’t have enough raw materials to fix the problem”. Think about this and choose your path. Together our decisions makes the society that we want.