Dax Shepard Celebrates 12 Years of Sobriety With a Sweet Message About Wife Kristen Bell

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Dax Shepard has officially been sober for 12 years.

The Parenthood actor celebrated the milestone by sharing a sweet message about his wife, Kristen Bell, and their two daughters, Lincoln, 3, and Delta, 1, via Twitter on Thursday.

WATCH: Dax Shepard Reflects on Traumatic Childhood Experience: 'I Was Like, It's My Fault'

"12 years ago today I came out of my last toxic, life threatening stupor," he wrote. "I now have a wife & babies & some self-esteem #gratitude #promises."

Shepard, 41, has been very vocal about his troubling past (including being molested when he was only seven years old) and struggle with substance abuse.

During an interview with CBS Sunday Morning in July, Bell got emotional when talking about her husband's former addictions.

RELATED: Kristen Bell Reveals Longtime Battle With Anxiety and Depression

"He knows the value of things. He was an addict for many, many years and he pulled himself out of it, and he's been sober for 11, 12 years now," the 36-year-old Bad Moms star said at the time. "And he knows how many times he's messed up and how many times he's been really close to losing everything."

Bell told ET last November that the two often hated each other, but were luckily able to overcome their differences.

"Our relationship wasn't perfect," she admitted. "We had a couple years of fighting and of growing pains and hating each other, then loving each other and going to couples therapy and we worked it out ... We earned each other."

WATCH: Kristen Bell Shares First Photos of Courthouse Wedding to Dax Shepard

Shepard and Bell tied the knot in 2013 in a simple wedding in Los Angeles. "We got married in a tiny room in the Beverly Hills courthouse, and it was still one of the best days of my life," Bell, who dated Shepard for six years before he popped the question, gushed.

The two kept their nuptials private, and didn't publicly share any photos from their special day until three years later.