Lewis Hamilton has admitted his struggles in F1 'keep him up at night' ahead of next weekend's Chinese Grand Prix.
The Mercedes star has endured a nightmare start to the season so far, struggling in races in Bahrain, Saudi Arabia, Australia and Japan.
Hamilton will be leaving the Silver Arrows at the end of the campaign, having agreed a bumper move to Mercedes' rivals earlier in the year.
Yet the 39-year-old insists he remains determined to achieve success with his current side and that their plight 'keeps him up at night'.
Lewis Hamilton has admitted his F1 woes 'keep him up at night' ahead of the Chinese Grand Prix
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He told Motorsport.com: “I think ultimately if you dwell on difficult times, then there's only one way you're going.
“I think it's really good to be able to unplug, reset and reset your focus and your goals moving forwards. And so, I have a few of these other things.
“But still the ultimate thing that keeps me up at night is, ‘when are we going to be fighting for wins again?’
“‘What can I do different? What can I do better in the car? How can I improve in qualifying?
"How can I deliver more for the team? What different set-up things can we take?’
“Those things still keep you up. But we win and we lose as a team. We're very united.
"Everyone's working incredibly hard, so we just got to continue at it.”
Hamilton has previously admitted he's a huge fan of MotoGP.
MotoGP Dorna sporting director Carlos Ezpeleta said earlier this week that he wouldn't 'rule out' the prospect of sharing race weekends with Formula One.
And Hamilton has admitted it would be 'epic' if both sports could be played out on the same weekend.
“I didn't really think a lot about it, [but] obviously I read the headlines about it," he said.
“I think Liberty has done an amazing job with Formula 1, obviously the value of the thing [rising since 2017]. So, I think they can do a great job with MotoGP.
“It's exciting because I love MotoGP. It would be epic if we can have them on the same weekend.”
Meanwhile, Hamilton also admitted 'all of his energy' is going into helping Mercedes improve.
While George Russell has fared better than the F1 icon, the Silver Arrows are still a long way behind Red Bull and Ferrari.
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Lewis Hamilton and Mercedes have endured a torrid start to the new F1 season
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Hamilton, speaking in Japan last weekend, said: “I’m not quite sure yet how I’m going to navigate it but right now I want to finish on a high here so all of my energy is going into this.
“Of course there’s excitement for the future but right now we’re going through a difficult phase and that’s my challenge, that where all my energy is going to try and figure out how we can get back to the top, how I can work with the engineers, give better debriefs, give them better direction to get fighting at the front.
“I’m a competitor first and foremost so thinking about next year is not going to help.”
Hamilton also knows he will soon have to talk with Mercedes chief Toto Wolff as his departure creeps closer.
“I mean at some stage I will have to [talk to Wolff]," he said.
Lewis Hamilton remains determined to end his time with Mercedes on a positive note
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“I think it will start with a conversation with Toto, because I don’t know how to navigate. I’ve never been in this position before at this point in the year.
“When I was leaving McLaren it was towards the end of the season, I think I didn’t go to Mercedes until December, had my first seat fit after the season was done, so I imagine the same here."