Get rid of your car for starters. Shop at markets where they don't cover anything in plastic. Adjust what you eat around avoiding buying plastic, as much as you can.
This is so far out of what I, a west-coast american, can actually accomplish its kind of funny. I know you are being serious and those are all great suggestions that I would love to implement, but to address them: things are so spread out here I literally can't get to work/a grocery store without a car, there's a single farmers market, which runs for 4 hours every Sunday once a week and doesnt cover everything in plastic. Its literally unobtainable for someone living here. Maybe directly inside the city its possible to go carless and shop only at farmers markets, but being downtown would be way too expensive.
