A summary of what those things are that we can do:

First by far: Choose low-emission transport. That means walk, bike, or EV. Use low-carbon public transport if available in your area. Fly less.

Second: Eat less meat, sugars, and packaged processed food, and eat less at wasteful places like restaurants.

Third: Insulate your house properly and switch to heat pumps and inductive cooktops.

What the article doesn't mention is that you should also consider where the goods you buy come from. Buy local where possible. In general, the further a product has to travel to get to you, the bigger its carbon footprint.

EDIT: Not sure what kind of knuckle-dragger would downvote this. Someone with shares in fossil fuels or just another Reddit climate doomer who gets off on the thought of the planet burning?