"Experience is like a suitcase, without a grip — it's really heavy to carry, but you feel bad if you're going to let it sit somewhere," the Ukrainian was quoted as saying by the Times.
"You can be as good as you are, professional as you are, as athletic or strong, but the only thing you can't swallow like a pill is experience.
"I just recently heard it at the New York press conference from Anthony, that it's all about a mental game. But I'm not playing games, I'm serious with what I'm doing."
London 2012 Olympic champion Joshua has taken the division by storm since turning professional, winning all 18 of his fights inside the distance.
The fight is expected to draw the biggest British boxing crowd in nearly 80 years, with an attendance of 90,000 set to watch at Wembley.
(Reporting by Simon Jennings in Bengaluru; Editing by Peter Rutherford)
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