Stokes had recently taken to social media to reiterate his commitment and passion towards English cricket.
Campbell believed that the 4-1 Ashes drubbing in Australia, has left Stokes hungrier for success.
“He has a lot to prove. You don’t have to be a rocket scientist to know the Ashes didn’t go so well.
“He is a proud man who wants England to be the best team in the world. I have no doubt the Ashes knocked him for six. He was gutted but now he has taken a breath.
“It is exciting for England to see what he is putting himself through to get ready because that boy can play.”
In a recent review of England’s Ashes performance conducted by the ECB, it was decided that they’d stick with Stokes as the Test skipper, with Brendon McCulllum retaining his role as the head coach.
England’s next Test outing is against New Zealand, starting 4 June at Lord’s.