This practice is in self-control.

Consider scaling back one comfort that you can do without.

For example, cut down the duration of hot shower, do not turn on the seat warmer in your car if it’s only mildly cold, turn on your TV manually instead of using the remote, or if you have the time, go through the regular security check even if you are pre-TSA.

See if you can expand this to other aspects of your life that help you develop stronger self-control at the same time decreasing your carbon foot print.