Luciano Spalletti praised the mentality shown by his side in their at Spezia on Sunday.
"We had to work hard to get the breakthrough," the coach said after the match.
"We need the flair and creativity of our top players, like what [Khvicha Kvaratskhelia] and Victor [Osimhen] showed today, but there are matches in which we need the willingness and mental ability of the whole team."
He added: "I have a quality group that proves its worth every time. We never intend to settle. Our goal is to try to win every game and we will play with great conviction in the Champions League too.
"There are moments in life when, if you achieve success, you start to think about whether to stop or step things up. Here we want to step up and repay the love of the Napoli fans. Both in Italy and in Europe we want to be in with a shout until the end."