[nothrowaways]

The best skill is understanding your limits.

Just because quantum research is in demand doesn't mean you will be in demand or successful.

Take Elon musk for example.

He knows a Stanford PhD is highly valued. But it only took him two days to realize that he doesn't have the IQ that match his classmates and he is not smart enough to be a leading researcher. He realized it early enough.

Had he decided to continue to stay at Stanford, he would have probably dropped out after 2-3 years feeling demoralized with imposter syndrome.

So the best skill I can think of is always knowing your limits.