Anthony Joshua knows he's "at the end" of his career which is why he wants to make the most of it before he retires from fighting.

AJ, 33, has accumulated a huge fortune over the years during his time in the limelight.

According to Celebrity Net Worth, his personal wealth stands at a cool $80 million (£65 million).

This is all thanks to his multi-million pound earnings from boxing, celebrity appearances, endorsements and more.

On top of that he also owns a hugely successful management company called '258' which represents the likes of Joshua Buatsi, Frazer Clarke, Campbell Hatton and Ben Whittaker.

But he acknowledges that he isn't getting any younger and that those years he has spent competing at the highest level are beginning to catch up with him.

Asked if his team would let him take a month off as part of JD Sports’ King of the Game Christmas campaign, he told GIVEMESPORT.com: "They would, but I think it's detrimental and that's why we have the ethos, our company’s 25/8.

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Anthony Joshua stars in JD Sports' King of the Game Christmas campaign

Anthony Joshua stars in JD Sports' King of the Game Christmas campaign

"Because 24/7 is good - I know, 25/8 isn't real, it’s made up - but the ethos is, if you had that extra month to take off, how would you spend it? You've got one person that's going to spend it recovering, getting their mind right, their spirit right. Then you’ve got another person that's not thinking of the future.

"They're just like, ‘Yeah, I'm just going to enjoy my moments now’. You’ve got to put in that extra hour and that extra day if you want to make small steps towards your goal because it's so difficult and I feel like there's so many challenges out there that for you to take your foot off the gas gives these people that are constantly on the gas, so much of a gap. That's why you have to have that 25/8 mindset; extra hour, extra day, put the work in, don’t stop, keep on going.

"So from the jump it was like 25/8, motivated nonstop because it doesn't last forever. I'm gonna be 34 next year, I swear I remember when I was 21.

"I'm baffled, I'm an old man, where's the time gone? So I always look at it like I'm not at the start of my career and I'm not in the middle, I'm at the end. So that's how quick time has gone, I’ve gotta really make sure now I put in the most work I've ever done and make these last years count."

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Boxing ace Anthony Joshua has revealed his admiration for tennis star Nick Kyrgios

Boxing ace Anthony Joshua has revealed his admiration for tennis star Nick Kyrgios

Despite being a two-time world champion, AJ also admitted that he will only really be fully satisfied when he officially hangs up his gloves for good.

"My greatest achievement hasn't been reached yet," he added.

"It will be when I make it out the other side of the fight game. I personally always thought I would probably cry when boxing is done, because I put a lot into it inside and outside of the ring.

"Like you put a lot into your work, you wake up, you sacrifice, you're tired sometimes; all that type of stuff, we all go through it. Sometimes you have your bad days but I've always tried to be strong, well I am strong.

"I always felt like why I would be emotional after is because I would have reached the ultimate high because I made it through a very dark, tough industry. I think now it would be making it through healthy and being able to enjoy commercial stuff without pressures of having to train after, enjoying going back to your family, just chilling. So that will be my major achievement, I’m looking forward to that."

Watch Anthony Joshua in the JD Christmas campaign ‘King of the Game’, with JD exclusive product drops available online at jdsports.co.uk and in stores across the UK now.