It horrifies me to the extent that I can't think or read about it in too much depth, it's too overwhelming.
Some great suggestions upthread about individual changes we can all make. Yes corporate and government changes will have the biggest impact, but we can't claim to want to stop climate change and then do nothing to amend our current habits. Doing something, even if very small, makes me feel less powerless.
Eating less meat, consuming less (fast fashion etc), walking and cycling where possible, less or no flying. Changing banks is also a really big one, I banked with HSBC for years and they are one of the biggest funders of rainforest deforestation. I can't believe it took me so long to realise how bad they are. Moving to an ethical bank or building society is a huge step, they invest your money into green energy and social enterprises that are positive for people and the environment. Co-op are really good, Nationwide are supposed to be the most ethical of the bigger banks.