We do need action on all levels of society, and we need to be treating this as a crisis.
On a local level (in the UK) there are a lot more community and Council groups being setup to try and find solutions I would absolutely recommend attending those.
On a larger scale - vote at all levels, council and governmental, vote for people who are putting climate change at the front of their agenda.
Other than that, ensure your pension is invested in green and eco investments and try to fly less (maybe even drive less).