Lewis Hamilton says no driver or sportsman is ever perfect, even if you are someone like world tennis number one Novak Djokovic.

Hamilton has had a difficult start to the 2016 season and hasn't won a race now since he clinched the title in Austin last year, but admits that while he is always improving and looking to take it to the next level, it is difficult "when you already feel you are the best".

"I think better...," replied the Mercedes pilot, when asked if he feels he is still improving as a driver. "It's difficult as a sportsman, [however], [and] I don't know if this applies to anything else but it's difficult to be better when you already feel you are at your best but you are always improving on things, you are never perfect on all round things."

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"If you look at Djokovic, he's the best at the moment but I bet you any money he has small weaknesses every now and then and he will probably train on those to make sure those are stronger and by raising those others fall down," he continued.

"There might be 10 things to be perfect but you have to find the balance, so every year you improve on one area and maybe the other one drops down a little bit. The goal is to be perfect everywhere and that's the cycle of life.

"I've been able to drive like I am now since I was 10 years old it's just that now I do it on a Formula One scale and now I understand my engineers who are all Oxford university students so I understand mechanical set ups, so knowledge-wise I'm growing mentally for sure, confidence-wise I'm growing mentally but driving-wise I drive the same.

"But there are areas from race on race off, from one weekend you are good on the brakes, one weekend you are so-so and one weekend you are good on the pit stops and one weekend you are good everywhere and the next weekend you are down five up four so it's just how racing is," concluded the three-time Formula 1 world champion.