The Spain international knows that competition for places in the Barca starting XI is more tightly contested, but does not regret his decision to leave the Gunners
The Spain international left the Emirates Stadium in the summer to join the European champions, and is used in a squad rotation system by Pep Guardiola due to the calibre of the attacking players at the coach's disposal.
The 24-year-old has no regrets about leaving Arsene Wenger's side, and knows that there is increased competition for places at the Catalan giants.
"It was the right time to leave," Fabregas told FourFourTwo magazine.
"At this club I have to work doubly hard to earn a place in the team."
Fabregas, who scored Barcelona's third goal in the recent 3-1 Clasico victory over Real Madrid, has also indicated that there are other differences between his current employers and Arsenal.
"In London, if you lose you can still go out to dinner, live your life and people kept encouraging you," he revealed.
"However, at Barcelona when things are going well it is the best club in the world, but when things go wrong there is criticism."
The Champions League holders are currently in Japan for the Club World Cup, and open their campaign against Al Sadd on Thursday in the competition's semi-final.
Starting last month and continuing every Friday through to January, Goal.com will publish extracts from Graham Hunter's highly-anticipated book, Barca: The Making of the Greatest Team in the World. The most recent extract detailed how Jose Mourinho's Real Madrid have closed the gap on Barca following a period of Catalan dominance.