Hamilton says he wants to become an “all-time great” but to do so he aims to nullify any cracks in performance which his rivals may look to take advantage of.
The Brit won his fifth world title this season after comfortably seeing off the challenge of Ferrari’s Sebastian Vettel.
But he knows next year will be difficult and he wants to try and stay a step ahead of the rest of the field.
Hamilton harbours hopes of catching Michael Schumacher’s record of seven Drivers’ Championships – but first he has work to do.
“I asked my team to send me an email from several different departments, asked them to be blunt,” Hamilton revealed at a team sponsor event for Hewlett-Packard.
“They don’t even need to tell me who the email’s from, just tell me the things [they] think I can improve on.
“If there’s been a certain experience this year you felt that could be better or something I’ve said that’s swayed the energy within the team.
“Because I’m looking to be the all-time great and that means winning in all areas.”
Hamilton also explained why he feels he can continue to get better, despite being 33 years old.
“I feel like I’m still not at my best,” he added.
“I’m just on the way there, I’ve still got lots of work to do.
“We’ve just signed for another two years so ’19 and ’20 are going to be interesting.
“My goal is to make sure Ferrari don’t win a Championship within those two years – or Red Bull.”
Hamilton returns to action when the Formula One season gets underway in Australia on March 17.