The Mercedes driver took his third consecutive victory at the Chinese Grand Prix to close the gap to team-mate Nico Rosberg in the title standings to just four points.
"I am in the happiest mood that I can remember being in," he said.
"It was just a really incredible weekend. It was a great qualifying, and I was not expecting it to be as it was.
"In the race, to get a great start and pull away, and control it from there, it was an incredible feeling.
"The job the guys are doing, and the guys that are around me, means I am so much more comfortable with the people I am working with this year.
"I am able to extract the most out of my engineers, so I feel like we did a good job with the set-up."
Hamilton believes that the step he has made on track this season has been helped by getting his life more stable off it.
"It is a combination of lots of things," he said. "It is where you are in your life, family, girlfriend, where I live. Everything. And having the right people in place.
"My management, being in the right team, and then this year I am just able to arrive and drive with no other worries.
"And of course I have a great car and a great group of people to work with."
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