Second-guessing

We can't start second-guessing ourselves.

I don't think we should start second-guessing ourselves. I think we should proceed normally.

The German virologists were left largely unhampered by a restrictive central regulatory body second-guessing them or imposing burdensome procedures.

I don't think we should start second-guessing ourselves.

Yanni is second-guessing himself.

Dmitri was second-guessing everything he did.