Mike Marshall knows firsthand how hard it is to stop using meth once you start.

Marshall, a former addict who used meth for 10 years, said ” it permanently rewires the brain. When I was using, I would wake up like ‘I’m never doing that again’, and I’d go 3 months without doing it. And then one night I’d have a couple cocktails and the next thing I’d know I’d be smoking meth.”

But 15 years ago he smoked meth for the last time. Now he dedicates his life to helping other people get out of the cycle of addiction through his organization, Oregon Recovers. A lot has changed in the past 15 years — and Marshall said it’s not for the better.

“I’m active in the Crystal Meth Anonymous community. We’re all incredibly concerned because this isn’t the meth we used to use. It almost immediately creates psychosis.”

It’s also gotten significantly cheaper.

“The meth of 15 years ago was a lot more expensive. I recently intervened with a friend who had relapsed, and I said give me your stuff. And he went and he got the Hope Diamond of meth, and he put it in my palm, and he told me it was $40,” Marshall told KOIN 6 News. “Back in my day it would have been, like, $800.”