Hill made his England debut in the autumn of 2018 under former head coach Eddie Jones, a selection he says “100%” came too soon.
“When I look back at getting my international cap at 19, I feel a completely different player and person to then,” he said.
“I was selected after six or seven Premiership games, and it was a next level I almost didn’t feel ready for.
“As an athlete you just mature as you get older and you learn what works for you and is best for you. And in terms of playing it’s always been about how many involvements I can get in a game.
“Steve [Borthwick] wants me to run and work hard and that is an absolute must at international level. For me it’s just about knowing what I can do differently [to the other back row players] and trying to bring that to the game.”
Hill’s England call-up came in the midst of a whirlwind few days, with Bath ending a 29-year wait to win the Premiership title after edging past Leicester at Twickenham.
“It’s been crazy, but so amazing to get over the line. It was better than I could have ever imagined, it’s been a special couple of days,” he said.
“You see the French teams when they win their stuff, and the celebrations [with the fans], and that’s how it felt. It felt like the whole city came out to support us, and it showed how much it meant to everyone.”
