La Viola have won their last three games in quick succession, scoring nine goals in a run that includes a notable 4-2 victorya over defending Serie A champions Juventus.
Montella believes that his side have more self-belief this campaign ahead of tomorrow night's clash with Scudetto contenders Napoli.
He told reporters: "I am extremely happy. With respect to last season I see a team that is more precise and convinced of its strength.
"We are scoring more than we were last season and we are adapting better to our opponents.
"I don't know where this will take us but what I do know is that we are growing and we have to continue on this path."
Fiorentina currently sit fifth in Serie A after losing just one of their first nine league games.