The most developed world individuals can do, as you say, is reduce their own footprint in minimal ways and VOTE!!
These individuals still can not choose zero-carbon heating/cooling (which is probably 1/3 of American's footprint, which you neglected to even mention), they can't choose how their infrastructure is produced (steel and cement, big time emissions there), they can't choose the actions of their American government, which spends a lot of carbon emissions on its internal activities as well as its foreign incursions.
So no, you really can't "boil down" to zero net emissions as an American unless you stop using heating, cooling, roads, transportation of any kind except walking/bikes, and if you completely stop supporting the US govt and its activities.
Without a tax on the resource, all you’re doing is leaving more of it for the others to abuse. The same happens with fishing, rhinos, etc etc.
Individual action is a moot point: we must solve this collectively. Everything else is a polarising distraction.
As an example I'll be moving into an A++++ isolated, triple glass, gass-less home using an efficient heat pump to convert 1x electrical energy into 5x heat energy using earth heat. Even then, we'll probably be at your consumption level (ballpark), for heating and ventilation alone. Many places on earth just won't work without heating (or AC), no matter how 'consumption aware' you are.
Curious as well to how you came to your last remark.
> Being aware of your consumptions really helps.
A lot of people live in places with summers and winters though, with ACs working through may to september and central heating through november to march.
Over 26 degrees indoors is when it starts to get unlivable and requires cooling. And without ACs it gets that hot indoors in a lot of the world and in plenty of Europe during summers, not just in tropics.
You need special attention to floor plan, facing, and to make choices that go the opposite direction of what you do if you have AC and want it to work efficiently, like having really big windows that open, several big doors, and high ceilings. These tend to make your heating less efficient, so there's that problem too.
You also need more expensive materials and different/better craftsmanship than has been commonly available to keep the house's interior finishes from deteriorating quickly when subjected to wide seasonal temperature swings. And more maintenance regardless.
Our family uses around 2000kWh electricity per year. This is half of what most people in my country use. And ~16% of the avarage US usage.
Ofcourse there are a lot of reasons for the differences but the biggest reason is being consumption aware.
We don't own an AC, use LED lights everywhere, and always check the power consumption of appliances we buy.
Being aware of your consumptions really helps.
Paving your roof with solar panels will only help the producer of the panels, not your carbon footprint.