Roy Keane has admitted he regrets not relaxing and enjoying some of his best moments at Manchester United.
Keane was famous for his drive on the pitch, and during his time at United he helped lead them to seven Premier League titles, four FA Cups and one Champions League.
He disagreed with Gary Neville though after his former team-mate admitted that he would ease off at times when it was clear Sir Alex Ferguson's side would win the league.
For example, in the second season after winning the Treble in 1999, Neville felt there was no doubt they'd pick up a third title on the spin and managed to relax.
'We'd never have said it publicly but going into the 6-1 win over Arsenal I don't think there were any doubts we would go on to win the league, we were totally confident,' Neville told MNF Retro.
'In years gone by we had titanic battles with Arsenal but this season didn't feel like it was going to be one of them.'
But Keane, on the other hand, made it clear he had never been able to adopt the same mindset and accepted that it was a shame in retrospect.
'Believe it or not, I'm going to disagree with Gary,' Keane responded.
'I didn't fall for that at all, throughout my career I never thought that anything was easy. We made it look easy at the end, but that was because we worked really hard.
'Even when you were 10 or 13 points clear and people say it felt like the league was won, I never felt that way, it wasn't in my make-up.
'I wish I was a bit relaxed when we were so far clear, but I felt I couldn't relax. I couldn't think that way, that was my mindset and I was never happy really.'