That is right you have to pace yourself and look after the power unit. Alain Prost won 4 tittles by winning the race in the slowest time. Its hard to get your head around how he won so many races.See that is where you Verstappen fans get seriously confused. Lewis is fast, but only when he needs to be. He's not trying to be the fastest guy on track, even though he is incredibly quick. However, Hamilton's claim to fame is that he is known for being a very technical and extremely focused driver. This is why Lewis can squeeze out three tenths where other drivers can't. This is why even though his teammates are driving the same car they can't, or that even though Red Bull had the fastest car during the Vettel period, Lewis could still clip both Red Bulls to take pole in any race, even if he didn't always win the race.
Being the fastest driver isn't going to win races, and if that's all that you have to bring to the table, you aren't going to win. You have to have the talent, and the skill. You have to be shrewd, and patient, and Lewis is the COMPLETE package because he possesses all of those attributes. This is also what makes other drivers, and fans alike very envious.
Its like a sprinter in a marathon, He has the mentality to go fast the entire event and he will probably loose out in the final stages.