The Spaniard insists that his increased self confidence from the last campaign will only help him this season.
The Spaniard came into the Gunners' line up last season in place of the Frenchman when he spent an extended period on the treatment table, and impressed enormously in the role.
He also excelled in the win over Crystal Palace and draw with Liverpool, after Debuchy was chosen in the loss to West Ham, with Arsene Wenger clearly unsure over who is his first choice.
Bellerin though, insists the competition with Debuchy can only be seen as a positive for him and the side in general.
“I know it’s going to be difficult with Mathieu back now but I’m just going to keep training hard," he told arsenal.com.
“I think it’s very good and all the successful teams have that kind of battle in every single spot because that keeps you on your feet and makes you perform better.
Increased confidence will help performances this season
The defender has also insisted that his increased self-belief will only help him to further improve this season.
After such an impressive breakthrough last season, in which he was very much an unknown quantity, many have predicted that this year will be altogether different with sides now accustomed to his style of play and how to work against him.
He says though, that he doesn’t believe in second season syndrome and will instead focus on simply carrying on where he left off last season.
“I’ve had a few people talk about second-season syndrome but I really don’t believe in it,” he added.
“I’ve got the confidence knowing I’ve played 30 games already so I’m more confident in the games. I just need to keep training and playing the way I was last year, keep learning and keep getting experience, and hopefully having some good performances.”