Andrea Stramaccioni praised the determination of his Inter players after they came from behind to consign Sampdoria to their fifth consecutive defeat.
The result saw the Nerazzurri leapfrog Napoli to climb to second in Serie A ahead of their crunch clash with pacesetters Juventus in the Derby d'Italia at the weekend.
Inter have now won eight consecutive games in all competitions and their coach said the performance demonstrated their developing maturity.
"The best quality that emerged tonight is that we are growing," Stramaccioni told reporters after the game.
"This evening I saw hunger and we never relaxed. We need to continue to work this hard in every game."
The trainer highlighted the efforts of Colombian midfielder Fredy Guarin, who capped off a fine display with a spectacular long range goal to settle the match, but claimed the whole team deserved credit for the win.
He added: "Our weapon is the whole group and today was a victory for the collective."