There's a few guys at work with some DUI experience
One guy was a heavy equipment operator, who got a DUI and lost his CDL. He eventually got it back, but did not change his behaviour. He got another DUI and lost it for good. In my state, when you get a 2nd DUI, you have no possibility of EVER getting your CDL back. Then he lost his well-paying job, because he can't perform his duties without a CDL.
He lost everything. His house, his cars, everything except for his family. Because when you lose a well-paying job, you can't afford your lifestyle anymore. He had to move into a rattrap apartment in a gang-infested part of town.
Eventually, he was hired back, for a much lower position with very menial pay.
Another guy, a mechanic, had a DUI several years ago, before he was even hired. But it was still on his record.
Sadly, he may never have changed his behaviour, because over the years, he's shown up numerous times reeking, unshaven, sleepy, bloodshot eyes, etc. And then a few hours later, he was better. And he's called in sick numerous times, never with a doctor's note. The only predictable thing is that if it's a monday or friday, it's a 50-50 chance of him not showing up.
He's a nice guy, and very sharp. But he's definitely his own worst enemy.
I'm worried that someday he'll do something regrettable, such as hurt somebody or himself
And if he were to get in a dui car wreck and hurt/kill somebody, he's not rich enough to buy his way out of trouble, like Ted Kennedy