Williams said: "It's all down to the players. The second half on Saturday was excellent (Orient came from 2-0 down at Carlisle to earn a draw), and we were talking about putting that in for 90 minutes and the players did that.
"At 1-0 we were thinking we should be two or three up and when we got to five there could have been a lot more.
"I thought we worked very hard defensively to shut them down and stop them playing. It's all down to a lot of hard work. We have a very honest group of players here.
"We must not get carried away as we have a massive game here on Saturday (against Brighton). I want the players to enjoy the win but it is over and done with now."