'I want to become one of the world's best' - Joey Carbery
Given his birthday falls on the 1st of the month, November has always been a significant time of year for Joey Carbery.
His 21st will be tough to top, however, falling as it did in the week he found himself catapulted into the Ireland squad for what would go down as an unforgettable day.
For the Dargaville boy, the experience of steering the Irish ship home against his native New Zealand in the green jersey on debut will be hard to top. However, Carbery firmly sees that day as a beginning and not an end in itself.
Since Chicago, he has established himself in the Leinster team - operating largely at full-back in Rob Kearney's absence and impressing on a weekly basis in the biggest games.
On Saturday, he is primed to win his fifth cap - most likely off the bench - and he has big ambitions to kick on from here.
While he is keen to keep his feet on the ground with the help of his father, Joe, who was his underage coach in Athy, he is not afraid to aim high.
"My dad would always tell me to pull my head in if I'm doing anything wrong but he's always a good man to have in my ear," Carbery said.
"The thing that's probably the most (important) is just how much I want to achieve.
"I want to keep getting better and hopefully, maybe become one of the best players in the world.
"That would be my ambitions so if I can keep improving every day and getting better at certain things then will keep me grounded and that makes me want to work harder."
Out-half remains his favoured position and he has watched Beauden Barrett's route to the All Blacks No 10 shirt closely.
The World Rugby player of the year did his time in the No 22 shirt behind Dan Carter, coming off the bench to devastating effect during New Zealand's run to the 2015 World Cup.
More often than not, he was replacing someone other than Carter and found himself at full-back working in tandem with the maestro.
When the legendary No 10 moved on to France, Barrett slipped into the No 10 shirt and it fit like a glove.
"Him being world player of the year last year, it obviously worked for him," Carbery said. "I just think that if I can keep developing my game, both 10 and 15, just being ready to play for wherever the team needs me, will put me in a better position."
He's been running both in training over the past 10 days, getting used to the way Joe Schmidt wants him to play if called upon to make an impact.
All the time, he is watching Sexton and learning a la Barrett and Carter.
"Johnny's very good," Carbery said.
"There's so many times after training I can go up and quiz him on what he has done and what I have done.
"If I sit down in front of a laptop he might pop his head over my shoulder and just say: 'Listen, stay square here, just give more space so…'
"He's probably the best person I can learn from in the world at this stage, just on his detail, how well he knows the game.
"He's such a good rugby brain, it's really good just to be able to pick it and it helps me a lot as well, just to be able to see a different view other than just mine."
Carbery can't sit in awe of Sexton, however, and it has been notable during their games together with Leinster how the younger man is confident enough to demand the ball when he feels he is in a better attacking position.
"In Leinster, Stu (Lancaster) has a big mindset of having both sides of (the ruck in) attack," he said. "So me playing 10 previously and then playing at full-back, it can help being first receiver on the other side to Johnny.
"We have certain calls that overrule other calls, so if there's definitely space on, there's a call for that.
"We work quite well together, like if one of us makes a mistake we can call each other up on it and if we do something well it's like, 'That worked well, let's keep doing that'.
"It's good to have two sets of eyes on the pitch."
Can that continue with Ireland? Carbery doesn't see a whole lot of difference between the way the national team attack compared to his province.
"Not really at all," he said.
"Johnny would be the main influence in attack with Leinster and Ireland, so he'd have his ways and it's kind of similar with both.
"Both teams want to attack both sides (of the ruck), keep the ball alive and attack space.
"There'd probably be a bit more emphasis on starter plays here but everyone are good enough players to be able to run the plays."
Like most people, Carbery's 22nd birthday celebrations were more low-key than last year's given he was due back in Carton House at the end of his day off a week ago. Despite being among the younger contingent of players, he has learnt to make his voice heard over the course of the past year.
"That comes with the role of being a No 10," he said. "You have to be assertive, you have to be dominant with your players.
"Even if you make the wrong call if you are assertive and dominant and everyone knows what they are doing, it's going to be more beneficial than if you are a bit stop-start, a bit unsure.
"A few coaches have been telling me: 'Put your foot down, it's you who is charge'.
"It took a while to get used to but the closer you get to the players and the more bonding you do with them the easier it gets to tell them what to do," he said.
"You can't really use that as an excuse, that I was too nervous. You have to just be able to say: 'OK, I am in charge now'. Just having that mindset of being completely in control helps."
It hasn't all been plain sailing and his last outing in green, the win over the United States last June, was a difficult outing in which two charge-downs led to tries.
Carbery, however, is ready to learn from the mistakes and move on. He's dreaming big.