Lampard believes that the squad is now starting to reap the benefits of Jose Mourinho's return to West London.
"There's a good feeling around the place," he told the club's official website.
"With the manager coming back it probably took a while for him to get his points across but, in the last couple of months we've found that mentality and feeling in the dressing room where we're going out there with more confidence.
"We have to keep that up because the minute you drop that the results will turn, so we need to keep at it and carry on this form."
Chelsea return to action on Wednesday when they entertain London rivals West Ham United in the Premier League.