Hamilton joins the team having spent the first six seasons of his career with McLaren.
"It's not that much different", Hamilton said when asked about how different his life is now. "It's put me in a better place. Just settling into the team pretty well. It's still a Formula One team and they still exist to win. The guys are doing a fantastic job and I'm really excited about the season and excited to get back in the car."
Hamilton revealed that he feels comfortable in the Mercedes W04 but added that it will take time to build a proper relationship with the team.
"I feel comfortable in the car. I feel we've definitely made some really good steps forward," he said.
"We've still got a lot of work to do. Obviously, normally when you go to a new team it takes a while to get settled in but I'm still working as hard as I can to make sure that feels as comfortable as possible. I think it just takes time and as time goes on I think I'll get even more and more comfortable in the team."
Hamilton also played down concerns about Pirelli's 2013 tyres.
"The tyres are a little bit different, it's not a big drama, everyone's in the same boat so it'll be interesting to see how long the supersoft tyre lasts, if there's a little more graining than there was last year. But again, everyone's got the same tyre. I haven't seen any discrepancies between each tyre."