Joyce was in charge of United's academy for several years.
"We've seen what the best looks like, we've seen what the best looks like at men's level," Joyce told MUTV. "They have certain characteristics. They sacrifice themselves for the team. It's a way of life for them, not a job. They're not bothered about the money, they're just bothered with winning things.
"Once they've won one, they want to win the next one, then the next one. So those habits you try to instil into players because you've seen what the very best looks like and you know what people need to have if they're going to compete with the very best.
"Whatever age level and, even if you're a man at 23, 24 or 25, you've still got to have those habits if you want to get better and have got to strive to get better. Winning is a great habit to have. Once you win, you want to win again, win again, win again and win again.
"The people and teams who are serial winners are different to everyone else in football so those standards have got be really hard in training and you've got to be demanding every single minute of every single day and they don't get the respite.
"These are the things you try to instil into players so you believe and you know that is what winning looks like. Winners find a way to win. They've got a pride when everything is equal, they can still find a way to win."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!