The France international has made just 14 starts in all competitions for the Gunners this term after a thigh problem kept the 26-year-old sidelined throughout October, November and December.
Diaby started a mere 17 games in the two previous seasons, but the Arsenal midfielder is confident that he can maintain his fitness in the future after making crucial improvements to his diet and training.
“I am very happy to have made this number of starts,” Diaby told Arsenal’s website.
“I got injured for three months, which is a large part of the season, but even so I have still made 14 starts, which is really good. We also have nine games to go, so I will get to 16 or 17 or more, which is good.
“I have tried to look after myself a lot this season by having good treatment, a good recovery [period] and all the things that make a player better.
“I have improved my diet a lot, my lifestyle has always been OK because I don’t go out too much and have always been a guy who stays at home and rests. I do all the exercises I need to improve my strength and my muscle weaknesses.
“I am still young and I know that I have many years left at the top level. I just need to look after myself every day and everything will be OK.”