The stock market rally since Donald Trump's election represents a "huge psychological difference" about the prospects for the economy, fellow real estate billionaire Sam Zell told CNBC on Wednesday.
There's been a shift on Wall Street from "extreme pessimism to possible optimism," said Zell, who refused to say whether or not he voted for Trump. "I don't think there's any reason why this country can't go back to [an economic] growth rate of 3 percent."
"I think this country needs someone like Trump to encourage us and lead us in an optimistic fashion," Zell said. "That's a great deal of what's been missing over the last eight years."
Trump has a "unique opportunity" to affect change in the United States, and Americans are ready for a leader who can break the gridlock in Washington, Zell added.
Zell also said Trump is "significantly more disciplined" now than he was a year ago. He added the real estate mogul has evolved as the reality of the presidency has set in.
In October 2015 on CNBC, Zell warned that Trump should not be underestimated, but he also said at the time that the then-GOP frontrunner did not have the right personality for the White House.