Shia LaBeouf has admitted an incident last year that resulted in him being arrested was "utter insanity".
The upcoming Hollywood actor, who is due to star in the new Indiana Jones film in May, was arrested in November last year after refusing to leave a pharmacy in Chicago at the end of a night out.
"That was complete and utter insanity," LaBeouf told Empire magazine.
"I was an ***hole, and it was a mistake I'm still completely embarrassed about it."
The Transformers star had just finished shooting the fourth Indiana Jones film, Kingdom Of The Crystal Skull, and was due to begin filming Eagle Eye when the incident occurred.
"I was in the middle of a strange mind state, having just come off a three-month window of focus. I can't diminish what happened at all," he said.
"But I can say this: I'm not the first 21 year-old to be arrested for a misdemeanour. There are lessons in life I need to learn, and I'm learning all if them in front of the public."
LaBeouf recently picked up the BAFTA Rising Star award and his success is due to continue with the release of the Indiana Jones film, Eagle Eye and Transformers 2.
However the actor claims that he won't get carried away with all the fame and glamour of Hollywood.
"I feel like a better person when I'm working I enjoy it more than anything else in my life. And the pool party, tons-of-chicks, binge-drinking bullsh*t that's not what I got into this for," he said.
"My closest friends work in coffee stores. They don't give a sh*t about a Vanity Fair cover I'm just another a**hole to them.
"And that's what I want: people who'll tell you you're a sh*thead sometime."
Indiana Jones And The Kingdom Of The Crystal Skull is due to be released in the UK on May 22nd.