Just don't overthink it.

White collar work now. In the near future white collar work double checking AI. In the far future you'll see if LLMs changed white collar work more than robotics changed blue collar work or vice versa.

And after that maybe something that's fun for you. Something you enjoy. Maybe something creative. Like painting or music. Maybe something with human2human interaction like service industry. Maybe something where slapping the "handmade" label on has value like becoming a chef or artisan luxury items.

Generally staying optimistic is the best rule of thumb.