"What can I do to reduce my emissions" is the wrong question to ask, because most people don't care that much about reducing their impact. Even if everyone who cares could somehow cut out 100% of their emissions, it would only make a small dent in the problem. Trying to get everyone to make sacrifices and take personal responsibility is just not going to cut it.

But this doesn't mean the situation is hopeless! Renewables are quickly becoming cheaper than fossil fuels. Battery prices are falling rapidly, enabling cheaper electric cars, as well as cost-effective stationary storage facilities. There are startups that are trying to make plant-based meat substitutes that taste better than real meat and cost less. These are all scalable solutions; even someone who cares nothing for the planet would rather have lower energy costs, or a sexier car, or a cheaper, tastier burger. if we want long-term sustainability, we have to build and promote these kinds of alternatives.

If you want to make a difference, don't worry about what your immediate, personal impact to the environment is: one person's impact is negligible. Worry about what sorts of technological development you're funding.

Or worry about what sort of politicians you're supporting. If all the people who bought a Prius in the last ten years had bought a cheaper non-hybrid, and instead spent that extra money lobbying for better emissions standards, I bet you that would have made a way bigger difference in the end.