Failed Cat C

Cheers pete,
It was one of the panic moments where,could i leave it in drive or not? The other things where stupid mistakes that shouldnt of happened.
It all went down hill after the big mistake. I know i was rushing after that i just wated it to end.
When i wait at roundabouts i feel as though rush. One instructor was all about speed and the other was, all about waiting untill it was safe no matter how long it takes.
But how long is, un-due hesitation?