Simone Inzaghi praised his Inter players for not losing their heads after they came from behind to beat Venezia 2-1 at San Siro on Saturday.
Thomas Henry had put Venezia in front against the run of play with an excellent header, before Nicolo Barella ensured Inter went into the break level.
The reigning champions looked like they would drop points at home in Serie A for only the third time since October 2020, but Edin Dzeko sealed an important win in the 90th minute.
The result lifted the Nerazzurri five points clear of Milan at the Serie A summit, with Inzaghi citing his players' ability to remain calm after Venezia's opener as the key to their success.
"The team believed to the end. The lads did so well considering we were coming off the Atalanta game and extra time in the Coppa Italia and Supercoppa," he told DAZN.
"If we analyse the goal, we should've done better and been more attentive before Henry's header. We need to get back to being ferocious in these situations.
"The team could've lost its head after that goal, but we kept going and turned it around in the end.
"We won the Supercoppa, we progressed in the Champions League and Coppa Italia – all these are important signs and now we enjoy this victory too.
"We'll get back together on Wednesday and start preparing for the derby."
Inzaghi also bemoaned the state of the San Siro pitch, saying it could harm his side's title tilt.
"The biggest problem both Inter and Milan face is the state of San Siro, as the turf is becoming unplayable for both of us," he added.
"We could've done better, but honestly the turf is awful. We need to take action – it has never been this bad before."
Dzeko had gone four Serie A games without scoring before his crucial winner, which came from his seventh attempt on goal, and he appeared to praise Inzaghi for not substituting him.
"When you score at the last minute it's normal to cheer with anger," the striker said. "We certainly missed my goals but the important thing is that the team wins. It was nice to score in the 90th minute."
"Inzaghi understands football; he has played football and he knows that I can solve the match even in the last minute.
"There are no easy ones in Serie A. Today we saw it and perhaps it was one of the more difficult ones for us this year.
"We suffer from time to time, but the important thing is to win and take home the three points. They defended well and there were few spaces, but to find the goal you need patience."