The 22-year-old is showing greater maturity at the Australian Open after frequent criticism in the past for his on-court blow-ups.
But the American, who is coaching 12-time Grand Slam champion Novak Djokovic, told the Melbourne Age newspaper he believes Kyrgios can only take himself so far without help.
"I'm a big believer in life, and what I've learned is that learning (something that) in 10 minutes would take someone (by themselves) 10 years is a very effective way to maximize the short window that you get in this sport," he said.
Kyrgios, seeded 17, indicated earlier this month he has no plans to hire a coach for the 2018 season.
So far he has been impressive at Melbourne Park going it alone, moving through to the fourth round with a hard-fought four sets win over Jo-Wilfried Tsonga on centre court Friday evening.
His next test is a clash against world number three Grigor Dimitrov on Sunday for a berth in the quarter-finals, which would match his best ever Grand Slam run.
"If I was him, I would sit down in a room somewhere and put some deep thought into whom might bring to the table something that I may feel I need that I don't have.
"I always surround myself by knowing my weaknesses and filling those gaps. You do it business, you do it in life, and doing it on the tennis court, I would highly suggest that to anybody.
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