The batter's return to the captaincy was announced last week and he explained how things have changed since he initially stepped down from the role in 2022.
Root told BBC Sport: "It's one of the greatest honours you could wish to have. I'm very excited by it.
"I'm in a very different place to the last time I did it with a team in a very different position."
Root, who will work alongside incoming head coach Stephen Fleming, has replaced the retired Ben Stokes as captain and is hoping to continue the attacking brand of cricket employed by the all-rounder and Fleming's predecessor Brendon McCullum.
The Yorkshire player said in an in-house interview with the England and Wales Cricket Board (ECB): "Hopefully we can work and build on a lot of the good things that have happened over the last four years.
"I think Brendon and Ben did a brilliant job, in many ways, of turning things around and getting us in a position where hopefully now we can carry that forward in a slightly different way."
Root added: "The last four years have been the most fun I've had in professional cricket and a big part of that was down to the way they [McCullum and Stokes] got me to see the game.
"Clearly, the last little while is probably what's fresh in everyone's mind but you're looking at a four-year period where we did a lot of amazing things. I've taken a lot from that and I feel it will be a big part of how I want to approach things moving forward as a leader of this team.
"The thing that stands out the most for me is the shift in mindset that was created around how we want to play the game - trying to strip the fear away from things, make sure guys feel that they can really just allow their talent to come out as frequently as possible and in big moments in games. The more that can happen, the better.
"If we can do that alongside recognising when the right time is to put pressure back on teams, or when the right time is to soak it up and to maybe play situations slightly differently, become a little bit smarter in certain areas, then I think we'll be a very formidable team and a very difficult team to break down and to beat."
