The Dexter star, who is the son of Tom Hanks, revealed to Collider that he had relatively little ambition when he first started acting.
"I never had any idea that I would have a career quite honestly. You never really have any idea what is going to happen. You have an idea of what you would like to happen," Hanks explained. "Even at that stage, that was before I had decided that this was something I was definitely going to try and do."
The star continued: "Really, more than anything else from that stage, I just said look, if I can be a working actor, if I can be an actor and not have a day job, I'll be fine.
"Now there are some days where I go, 'Maybe a little bit more than that would be nice'. Maybe I could work a little more consistently. If I could spend more months out of the year employed than unemployed, that would be nice."
Hanks went to reveal what draws him to an acting project these days.
"Honestly, the two main things that I always look for is, when I read the script for the first time, do I read it quickly? Because if I read it quick, that's an important telltale sign," the actor said. "If you look and you're like, 'Oh, we're already on page 70…' that's a good sign. So there's that."
He further commented: "Then, if it's something that I want to spend time on for 5, 6, 7 weeks or 10 months. Each one is different. Each project is different. Some are silly, some are not. Some are more realistic, some are not. Some are overly dramatic, some are not.
"You've just got to try and find the thing that's most engaging and entertaining in whatever way, shape or form, and it's different every time."
Hanks stars with Adrien Brody and Michael Chiklis in High School, now playing in limited release in the US.
Watch a trailer for High School below: