I am in a physics programme and people in my degree are anxious. It is natural to be in a very academic field.

Talking with my study advisor (and maybe more importantly, ignoring student debt), I realized you shouldn't worry more than is reasonable. That creates anxiety that isn't going to help anyone. An academic career is a bit like a lottery. And if you don't win, you'll know soon enough and you can transition out (if you are young enough and if you don't have health issues, like you or me). And with a degree you are better off than without any degree of any kind.

And if the completely economy is moving towards a state where almost no one has a permanent job/position, there is no more reason to avoid academics for that reason.