The Brazil international rejoined the Blues from Paris St-Germain in the summer, two years after his £50m exit.
Luiz spent three years in west London before his move to the French giants.
And since his £30m Blues reunion, he has been in sensational form.
“I am happy to be here. I am working hard, because I have some business to finish”
Chelsea star David Luiz
And Luiz has opened up on his transfer, claiming he made the right decision.
“I enjoy it a lot, I feel at home here. I was missing it a lot,” said Luiz.
“Sometimes you cannot choose everything, sometimes cycles end, sometimes they start again.
“I am happy to be here. I am working hard, because I have some business to finish.
“I hope so [to win the league], we need to work hard. I want to have this feeling.”
Luiz, 29, has helped guide Chelsea to a 10-point lead at the top of the Premier League table with 11 games remaining.