Carter, who plays for Parisian club Racing 92 and the is the world’s highest paid player, was caught drunk behind the wheel in February and subsequently banned from driving for five months.
Carter admitted that he got off lightly but worse than any punishment was the guilt and shame he felt for his actions as well as the thought that he put other peoples’ lives in danger.
“It’s not about the punishment that the judge gives you or the fine or anything like that, it’s actually the potential consequences that really hit home for you,” he told New Zealand’s Radio Sport.
“It actually made me feel sick and it makes me feel sick now, thinking and talking about it.
“It was a really challenging time for me and my family, I felt like I let a lot of people down, but people make mistakes in their life. The most important thing is that you learn from it.
“Much as I’d love to say I’ve moved on from it, it’s something I’m going to have to live with for the rest of my life.”
Carter, whose contract with Racing 92 expires at the end of the season, is still deciding whether to stay for one more year or hang up his boots to spend more time with his loved ones.
“New Zealand is where the family is and family is a big part of my life,” Carter added.
“I’m kind of going through those thoughts at the moment, whether I stay, whether I look at other opportunities.”
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