The former Wimbledon winner has advised the 19-year-old British tennis ace to learn lessons from Sharapova - who won the title at SW19 when she was just 17 before enjoying a successful career in the sport - as she has struggled for form since her historic win at the US Open last year.
Bartoli explained: "For Emma, because she won so young, obviously with all the contracts and sponsorships she has signed, the pressure she has to face - I mean, I cannot start to imagine it.
"It is so massive. It takes someone so special to handle it. She probably should get some advice from Maria Sharapova, who has been able to do it. It took Maria a little bit of time before she got the second one (Grand Slam) but then she went on to five in total."
Bartoli told Raducanu that she will be making progress if she reaches the latter stages of majors as it will show she is heading in the right direction.
The French former player said: "You have to be kind with yourself. Give yourself a little bit of time. You just need to get those strong results every time, it might not be winning, but quarters, semis, maybe a final. Then you will get your second one.
"If it is too dramatic in terms of change of results - like you win, then you lose in the first or second round - it becomes tricky mentally. You think, 'OK, I am not even close'."