The Mercedes ace snapped up the fifth title of his illustrious career last month to draw level with the iconic Juan Manuel Fangio.
Only Ferrari legend Michael Schumacher has more championship triumphs than Hamilton with seven, a number Hamilton will hope to reach.
The 33-year-old has two years left on his contract with Mercedes with major engine rule changes expected the following year Hamilton’s deal runs out, in 2021.
The Silver Arrows’ incredible dominance of the sport’s current hybrid engine era continued in Brazil last weekend when Hamilton’s race win confirmed a fifth successive constructors’ title, having also won the drivers’ equivalent in all of those seasons.
While Hamilton is still performing at the peak of his powers, the questions have been asked about when the British driver will decide to call it a day.
But he is not thinking about that just yet – insisting he is already beginning to plan as to where he can get even better in 2019.
“I feel I have still got more years, more days ahead if I am lucky and there are still many mountains to climb,” Hamilton told BBC Sport.
“There will still be difficult times ahead. I don’t know when they will come but I feel better prepared now than I ever have been.
“I have got to look at this season, which has been the best of my career, and think, ‘How can I improve next year?’
“It is easy to point out the areas but it is not that easy to improve on them.”
Four-time world champion Alain Prost thinks that Hamilton may need fresh motivation next year with the rivalry with Ferrari’s Sebastian Vettel having inspired his excellent 2018 season.
Prost told Motorsport.com: “I always said this year, if you are Sebastian or Lewis, you cannot have a problem of motivation.
“Because they were both four times champions, and they knew that there would be a fight between them, so they’d be the first one at five. After that it’s personal. Is the target to be at least seven, or not?
“I think the target is to be again world champion, and see what happens next year. It’s the first step, a personal decision. When you are on five, you think about six, you don’t think about seven or eight.
“Sometimes if for example like next year you have a change of regulations, it can always give you an extra motivation, because inside the team you don’t know how to manage that, and it’s again going to be a long season.
“That’s why it’s difficult to tell. You know one day you wake up and then say do I want to do that again? You don’t know, nobody knows.”