Almost everyone had slammed the defender for his mistakes earlier this season.
The 33-year-old insists he did not worry about criticism and did his best in training to improve.
Pundits, former players, fans and experts have all lambasted David Luiz, but the defender silenced everyone with a confident display in the FA Cup semi-final against Manchester City.
Speaking to the press after the game, the Brazilian has pointed out to his mentality which helps him 'survive' constant attacks on his abilities.
"A great deal of analysis of me, no? You can say that," said David Luiz when the BT Sport journalist said there had been a great deal of analysis of Arsenal defending after the Premier League clash among City and the Gunners.
"I believe it's a piece of football. I comprehended during my vocation that football is tied in with enduring. Consistently you will shield your group and others will bolster various groups. It's tied in with enduring. It's what I did.
"I was buckling down each and every day after my missteps. I assumed the fault - I was adult enough to get that. I was additionally unassuming to work more for the group."
Many people, including Tribuna.com's editorial team, vilified the Brazilian centre-back for his poor showings earlier this season. He got a lot of stick after a disastrous performance against Manchester City at the Etihad stadium straight after the resumption of the Premier League season.
Those who slammed the centre-back have been forced to eat their words as he showed his true class with a commanding display in the middle of a back three at Wembley.
Arsenal kept a clean sheet despite City boasting the likes of Raheem Sterling, Riyad Mahrez and David Silva in their attack.
The Gunners are set to face either Chelsea or Manchester United in the FA Cup final, and David Luiz hopes to bring the trophy home.
"We have a final to play this season and we're going to try win a title for this club because I always say this club deserves to shine again," he added.
This would be Mikel Arteta's first trophy and a perfect ending to one of the strangest seasons in the history of this football club.
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