Eat a non-agricultural, non-industrial, unprocessed real food diet, ie local simple seasonal vegetables and pastured meat (which sequesters carbon and nourishes the soil with dung, unlike grain and legume based agriculture which require huge fossil fuel and agro-chemical inputs and lead to rapid topsoil degradation). Food processing and packaging has a big footprint. Avoid supermarkets where possible, their whole business model is dependent on long food miles, out of season produce, plastic packaging and overprocessed, often sugary food.
Grow your own herbs and vegetables and get hens if you have space. Be creative if you need to, eg cherry tomatoes in hanging baskets.
Take your own tupperware to the butchers and cloth produce bags to the market.
Don’t fly, or limit to about once every 5 years. If you do fly, only fly economy and travel light... every extra unnecessary item taken on board requires extra fuel to lift the plane.
Limit driving to essential journeys. Look up local cycle routes and get on your bike, download the bus timetable, or put an audiobook on your phone to listen to while walking.
Buy second hand clothes, look after and mend the ones you have. Pass on unwanted clothes when they’re unsuitable. Don’t forget charity shops also take worn out/damaged clothes as rags that get sent to textile recycling plants.
Stop buying “stuff”… endless knickknacks for the house, plastic toys, read-once novels, electric waffle machines, Christmas bedlinen etc etc. Borrow stuff from the toy or book library instead.
Stop buying consumables, like umpteen types of makeup, conditioner, nail polishes etc. The only toiletries I use are a bar of soap, a smudge of toothpaste, bicarb, face oil, mooncup and a small cosmetic bag worth of makeup.
Insulate your house as much as you can afford. It’ll be a better investment than bank savings accounts with current interest rates. Even just putting bubblewrap up on draughty window frames will be a big improvement
Stop at one or two children. Ditto pets, unless adopted.
Rewild your garden and make it insect friendly.
Use the internet mindfully… servers and data farms are a rapidly increasing source of electricity demand in the world. All those Bitcoins being mined, cat videos being watched on Facebook, haul videos being shown on Youtube, spam emails being sent, sporner photos being uploaded to MN etc. It all has to be stored somewhere and served to you and that requires billions of KWH of electricity to run the whole show. Unsubscribe from email lists, delete unwanted emails, watch youtube at a lower resolution (click on the cog icon), skip past the cat videos etc etc.
We can’t do this on our own, no amount of simple living and green consumerism like bamboo toothbrushes are going to make a dent on their own. Collectively lobby for systemic change at the same time as doing the personal level stuff.