Boss Gary Johnson ordered Peterborough to cut out the mistakes after his side`s thrilling 5-4 win over Swindon.
Posh had led 3-0 and 4-3 but needed an injury-time own goal from Kevin Amankwaah to snatch all three points.
"I'm sure someone will wake me up in a minute. I'm not sure I've ever known a game like that," said Johnson. "Hopefully getting the winner so late on will mean London Road is a happy place. My message to the fans is to enjoy the victory and to leave it to me to sort out the mistakes.
"We did terrifically well to get ourselves 3-0 up after half of the first half. Some of our play and movement during that time was magnificent, but then some of the lads started to think they were playing for Real Madrid.
"We were quickly shown that you can't get away with doing things like that at any level and it is bitterly disappointing that all four Swindon goals have stemmed from our own failings or mistakes.
"At the very least you want the opposition to earn their goals, but as far as I am concerned we handed four to Swindon on a plate."