Frow said he kept his resignation a secret from his team and continued to work.
He said quitting was an enormous relief and he felt liberated.
I paused it and Im in a very good place, very happy to carry on, he added.
Ben FrowEdinburgh TV Festival
Paul Brand, the ITV News journalist chairing Frows Edinburgh session, said it was a brave admission.
The confession drew a round of applause from the audience.
