1. Take a whole car, by myself, do go do something at a place I could technically walk to.
2. Use hot water and air conditioning at the same time.
3. Leave lights on indoors just for the sake of “safety,” when I am not using the light.
4. Leave plugs in sockets, even when the appliance is not on.
5. Drink tap water.
If global warming is to end, and #5 is to be preserved, I must stop doing #1 and #2 at the very least.