I have been feeling like this too. It's not really fear for me, it's fear for what my children's future is going to look like.
I don't think there's ever enough focus on what a positive future could look like. Our lives are going to have to change radically, so we have a choice about whether to do that positively, or get forced into it through disasters - the kind of thing we are now seeing on the news every year.
The stuff that needs doing and makes us more resilient for the future that is coming would improve our lives in lots of ways.
To take one example, rivers that meander and have beavers creating dams to slow them down, and trees in their upper catchments instead of grouse moors and industrial farm units generating nitrate pollution, are rivers that are clean enough to swim in that flood less. I want rivers clean enough to swim in. Why do we accept that they get polluted?
I want to live in a world where public transport is funded so well I only need a car for special journeys, where I don't have to commute as far and I can flexibly work from home, where the natural and cost effective choice is to eat food grown locally, seasonally and organically, where everything that comes wrapped in 'plastic' can be thrown in my compost bin (Riverford have managed it so why can't others?), where houses are built or retrofitted to a standard where they are as comfortable in -10 as they are in 35 degree temperatures with minimal energy uptake, where the focus is on public luxury rather than private luxury and there's less inequality in society, where every child has the opportunity to learn about biodiversity and the natural world at school (forest schools are fab).
In every area it feels like we know what the solutions are but the people articulating them aren't being heard or listened to and there's so much structural inequality built in. Politics these days is so much about fear and division. We need a hopeful message and story - the kind of thing AOC was talking about in America - and one that people can genuinely grasp is for them.
I don't want all of the above to sound like the idealistic pie in the sky dreamworld thinking of a middle class middle aged white woman.