AARON Mullett says he is confident of getting back to his dashing best after re-signing with North Melbourne until the end of 2017.

Mullett, 23, was due to come out of contract at the end of this season but signed a new two-year deal with North this week. 

The Eastern Ranges product loomed as one of the Roos' brightest prospects when, in his third season, he played every game and finished equal-fourth in the 2012 NAB AFL Rising Star Award.

But the half-back has endured an up-and-down run since. 

Last year, he played 17 games but was dropped five times, and missed all three of North's finals.

Then a serious shoulder injury in January sidelined him until May, and he had to play eight-straight VFL games with North Ballarat before earning a senior recall, in round 15 against Geelong.

Mullett's bad luck with injury continued when he was substituted out of North's next match against Essendon with hamstring soreness and he subsequently missed the following round.

However, he returned to the Roos' team last Sunday against Melbourne as the substitute and is determined to finish 2015 strongly.

Mullett told AFL.com.au that as frustrating as the past two years had been, he was confident they would ultimately make him a better footballer.

"I think I've learnt over the past couple of years what makes me a good footballer," Mullett said.

"When I go away from those things, I'm not that great and I can get caught out a bit sometimes.

"It's pretty easy for me. If I defend well, I get the ball back and it's clear that's what I'm in the team for. But if I go away from that, then I won't be in the team – it's that simple."