The Italian has admitted the Giallorossi were guilty of overconfidence going into their demoralizing 7-1 loss to Bayern Munich last October.
Daniele De Rossi says Roma paid the price for being "too cocky" in last season's Champions League and is hoping that the lessons learned will help them progress this season.
The Giallorossi kicked off their European campaign with a 5-1 rout of CSKA Moscow and an arguably even more impressive 1-1 draw at the home of then Premier League titleholders Manchester City.
However, Rudi Garcia's men were then humiliated 7-1 in front of their own fans by Bayern Munich, and never really recovered as they bowed out of the competition at the group stage.