I am a volunteer organizer with PauseAI US, a pro forecaster, and some other things that are currently much less important.
The risk of human extinction from artificial intelligence is a near-term threat. Time is short, the chance of catastrophe is high, and anyone can take simple, practical actions right now to help prevent the worst outcomes. Contact your political representatives!

This really hits on an emotional level, but I ultimately take a different perspective:
I think solving the relevant safety problems for any AI systems that could disrupt the world at this scale will be extremely difficult, and that most surviving worlds are ones in which AI progress has been ~halted via a long-term globally coordinated pause. That means the only futures I should expect to be alive to experience are ones that are fairly “normal” in many respects, which means normal futures are the ones I should plan for.
How that cashes out for me:
I don’t have any major long-term ambitions, since I’m so focused on pausing AI, but my partner for instance is working on a mathematics education PhD and wants to help reform math education in the US. I think there’s a very good chance that that will still be a valuable thing for her to pursue, despite how long-term it is.