The plane journey that convinced Ferrari on Leclerc

From the moment Ferrari was hit with the reality that Sebastian Vettel was not going to win the Formula 1 title this year, it was inevitable attention would soon shift to what it needs to do differently to avoid another defeat in 2019.

After a campaign where driver errors played a pretty big part in defining the momentum of the season - think about how that 32-point swing in Germany would have changed things - the arrival of Charles Leclerc has got tongues wagging about how he will shake things up at Maranello.

While Leclerc has clearly impressed at Sauber this year during a stellar rookie campaign, it is one thing shining in a midfield team with few expectations and another pulling on the overalls of the Prancing Horse and having to go wheel-to-wheel against Lewis Hamilton in a Mercedes.

The pressure change is immense, and the intensity of fighting at the front, where tenths of a second can be the difference between becoming the tifosi's darling or fighting to stave off the sack, should not be underestimated. It can be enough to swallow up those without the mental strength to get through.

While Ferrari is doing all it can to help minimise the pressure - with boss Maurizio Arrivabene saying this week that the only goal for next year is for Leclerc to gain experience and 'absorb' the tricks of the trade - there is a feeling that in reality it secretly expects much more.

To realise why that is, you have to wind back the clock a little and understand that the decision to sign Leclerc was not some spur-of-the-moment call forced upon Ferrari because it was in a rush to sign somebody.

Ferrari made its decision on the eve of the Italian Grand Prix to pick Leclerc over Kimi Raikkonen not because it had to, but because it wanted to.

Leclerc's speed was obvious. The need to potentially shake up the internal dynamic at Ferrari was real.

And those fears about it being too early for Leclerc, of a young man not able to cope with intense pressure and at risk of being burned out and thrown onto the scrap heap before he hit his peak? The team management's minds had already been put at ease on that front.

"The greater the pressure that Charles is subject to, the greater his performance on track" Nicolas Todt, Leclerc's manager

It is often said that the qualities of an individual are found not when they are celebrating success, but when they have to pick themselves up from the bad moments.

And in Leclerc's case, it was the way he was able to cope with the death of his father in 2017 that proved a defining moment in convincing Ferrari that he had all it takes to deal with the pressure of racing for the Prancing Horse.

For someone who was as close to his father as Leclerc was, that loss last year was deeply painful. And, coming in the middle of an intense battle for the Formula 2 crown, it could have been enough to trigger a loss of concentration and a drop in form.

But amid all the personal heartache Leclerc was suffering, Arrivabene recalls meeting him on the Ferrari charter flight to Baku that week, and how the youngster's attitude there left him in no doubts about his star qualities.

"I asked him how he was after losing his father a few days before," explains Arrivabene. "He replied that he wanted to win the race, and then go home for the funeral. That is exactly what he did.

"If a guy can handle these moments, I do not think that he will have problems adjusting to the pressure of F1."

Leclerc has spoken openly about how the emotional rollercoaster of that weekend - the crying in the helmet after he took pole position and then the wins - meant those were days where he grew up a lot.

It is important to remember though that Baku was not the first time in his career Leclerc has faced supreme challenges. He knows full well how to keep his head under control when things are not going the way he may have hoped.

There was the risk as he started out his career of being unable to continue karting because the funds were drying up. Only a bit of help from his brother Lorenzo's best friend, Jules Bianchi, in convincing Nicolas Todt to try to help, made the difference.

Even today Todt remembers a very nervous Leclerc being dressed in a super smart black suit for their first meeting... and impressing throughout.

Then there was the difficult time in the middle of his 2015 European Formula 3 campaign. Taking a seat in the Van Amersfoort team that Max Verstappen had shone so strongly for in '14, Leclerc began the season in fine form with a series of wins in the first half of the year.

But something - most likely related to a senior engineer departing mid-season for personal reasons - changed within the team and Leclerc found himself suddenly on the back foot over the second half of the year. Where once he was battling in the top three week in and week out, suddenly he was fighting to be in the top 10.

Leclerc had to dig deep to try to recover; find answers about what had gone wrong, as he came home fourth overall in the standings.

But a super strong showing in Macau, where he finished second right behind winner Felix Rosenqvist, suggested he had kept his focus and unlocked the answers that were needed.

That time also marked Leclerc's arrival in the Ferrari Driver Academy, which helped him both progress as a driver and also show more evidence that when the intensity and pressure increase, he just gets better.

As manager Todt recalls: "Ferrari has helped him in many ways. Physical, mental preparation and also the contribution of the simulator played an important role. Of course, even more pressure has come, as is normal when you are part of the Ferrari world.

"But we have found that the greater the pressure that Charles is subject to, the greater his performance on track. That is a fundamental aspect, because today in the paddock I think that all the drivers have excellent sporting skills. But what makes the difference is the head, and on this front Charles I think is very solid."

Vettel will not be unaware of how fast and how mentally strong Leclerc is. Even if he hadn't seen it for himself, he has probably been told well in advance by Arrivabene why Ferrari is convinced it has the right man.

Did that prompt Vettel's recent suggestions that it will be important that the pair of them work together - rather than against each other - for the good of the team? Is he seeing a shift in the sands at Maranello as things will be different to how they were with Raikkonen? Only Vettel knows the answer to that.