In the first book, he almost regrets choosing the people he did for Bond Team.

Mayhap she will come to regret not choosing my blade.

Diners will not regret choosing one or more of the Ruffinos.

I was beginning to think you regretted choosing me as your running mate.

She goes on to say that every now and then she regrets choosing that as her pen name.

Ebony regretted choosing Lisa and struggled a lot.

I suspected they would regret choosing to maintain their honor.

Did I regret choosing dinner in the auberge over common sense?

Borac did not regret choosing the target of his spell; the leader would have been killed in a cowardly manner.

Assuming he is quoted correctly, he might regret not choosing his words more carefully.