Modric scored a spectacular goal for Real Madrid as they eliminated Manchester United at Old Trafford and continued his fine goalscoring exploits over the weekend in their 5-2 win over Real Mallorca, where he added another long-range screamer to his goal tally.
The Croatian revealed that the win against United provided him with more confidence after an average start to life at Real Madrid.
"The match against Manchester helped me loads and gave me more confidence than I had in the beginning," Modric told the official Madrid website.
"I had confidence before but not in the way that I wanted. This is football and in a match everything can change and turn out well."
The 27-year-old also took the time to discuss the upcoming Champions League quarter-final tie against Galatasaray, and insisted that Madrid must remain focused.
"We're in top form but we have to focus on the two matches and give it our all, like we did against Barcelona and Manchester," he added.
"If we concentrate fully on the two matches we can make it to the semi-finals. It's not going to be easy. It's a great team. Especially now, with [Didier] Drogba and [Wesley] Sneijder, they're more dangerous."