Mark Hulme told The Daily that the Two and a Half Men star is aiming to "prove to the world" that he is the right man to portray the tech mastermind in Jobs.
"He believes the role was meant for him," Hulme said. "[Kutcher will] prove to the world that this is the right part for him.
"He is already meeting with folks that knew Steve Jobs. He's working with professionals to get inside the voice. He's letting his hair grow out. I understand he's cancelled all meetings and actually cancelled all other projects."
Hulme went on to say that Kutcher's physical resemblance to Jobs helped him land the part, along with his affinity for technology. The actor is a Twitter leader with more than 10 million followers.
He added: "When he read the script, he loved it. He and [director Joshua Michael Stern] met two days later and they could tell that this was the right direction.
"The physical resemblance is actually scary, but he himself connects with this man in a very significant way. Of course he's a big techie. He has a personal affinity to what Steve Jobs accomplished.
"Ashton is a much more intense individual than a lot of his current roles represent. We are feeling convinced that he's gonna nail this."
Apple co-founder Steve Wozniak gave his blessing to the casting decision earlier this week.