"[But] I've got to take my opportunities and keep working hard.
"I've been with Issac Luke in the Kiwis camp myself and he's a great player to be alongside to learn off.
"I was frustrated at the way things panned out for me but that's footy. We'll just see how things go throughout the rest of the year."
It took Thomas Leuluai's misfortune and a season ending knee injury to open the door for Havili to make his seventh NRL appearance off the bench in Sunday's clash against the Newcastle Knights.
"It's been a real long time but it's an opportunity I've been waiting for and now I must take it," he said.
"I can't complain. There were two good front-line hookers in front of me and it was unfortunate for Tommy with his injury but it gives me the opportunity to make my mark.
"It's a big chance for me. NRL is the benchmark and we all want to play at that level for the rest of our careers.
"It's been good for my mindset having the bye before this week's game. It's given me time to think about my role and what I can do and the best ways I can prepare myself mentally and physically."
Coach Andrew McFadden acknowledges Havili has had a tough time since wearing the black jersey in last year's Anzac test but says he has shown a willingness to make adjustments to improve and develop his game.
"He's had his moments where he's got frustrated but that's what young kids do," McFadden said.
"Sometimes they find it hard to be consistent but that's what we're trying to really encourage now. "He understands what the expectation is around the organisation now and he's made some real improvements around his physique and his body.
"He's got the potential, now it's time to put it out on the field."
Looking beyond this season, McFadden was frank about Havili's place in the grand scheme of things.
"At this stage he sits behind Issac and a bit of the reason he sits there is because in the modern game it's a real value to have an 80 minute hooker," McFadden explained.
"Siliva would admit he can't get through 80 minutes of first grade so that's where Nathan and Tommy, at a pinch, could play 80 minutes as well.
"That's the level he's trying to get to and if he gets there then he's certainly got a bigger future than he already has."