Victory over Rangers on Saturday has handed the Jambos a fresh confidence boost and Berra says: "Sometimes you learn more about your team in defeat than victory".
"We arranged it between ourselves. It was just a civilised talk and everyone had their say. Hopefully it was a step in the right direction. I think criticism is good for you. If you make mistakes, you've got to learn from them. It makes you stronger. All the boys have responded in the right way and we need to keep doing it if we are to challenge at the top of the league."
Berra emphasised the fundamentals of team-work which have helped turn them around. "After the defeat at Celtic Park, a lot of people realised what we needed to do to win games. Since then, against Stirling, Motherwell and Rangers we've come out fighting and worked for each other.
"If someone is not having a good game, then as long as they are giving 110% then they are doing the job for the team. When we got off to a good start on Saturday the fans got behind us and it was a great atmosphere.
"That drove the boys on.
"A lot of it was down to all the boys working together. We got in their faces. At Parkhead, when we didn't have the ball, we didn't play or defend as a team. People said Rangers didn't play well, but we didn't allow them to play. It's no use doing it against Rangers, we have to do it against every team. Inverness on Saturday is a very difficult game, so we will have to be on top of our game again."