Jack Osbourne has shared an incredible milestone that has the internet feeling emotional.

Jack Osbourne is from rock 'n' roll pedigree ...

But he's certainly faced him demons in recent years.

But let's start way back in the 1970s ...

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Where it all began.

This was when Sharon met Ozzy.

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The eccentric lead singer of the iconic band caught Sharon's eye, and the pair were quick to hit it off.

After nearly a decade of on-and-off dating, they officially tied the knot in 1982...

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And went on to have 3 children together, Aimee, Kelly, and, of course, Jack.

However, being married to the Prince of Darkness wasn't all fun and games.

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After he was kicked out of Black Sabbath, Sharon had become Ozzy's manager - But this didn't mean the pair weren't shy of drama. They frequently, and publicly, struggled with substance abuse and alcoholism, and would engage in intense and violent fights.

But, always the business woman...

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Sharon decided to cash in on her rather bizarre family set up, and collaborated with MTV to start the reality TV show, The Osbournes, in 2002.

And The Osbournes was nothing short of iconic.

Their reality show was an instant hit and gave the world an insight into the remarkably unconventional family life of the Osbournes.

But, among other things, it also put Jack on the map.

Although this wasn't always a good thing...

​Following the struggles of his parents, Jack also faced issues with addiction.

Eventually quitting drinking aged just 17.

And today, he shared a heartwarming message.

That he's hit his 18 year sober anniversary!

"It's not that it get easier or harder, It's just that it's life on life's terms. If anyone is trying to get sober, know that it possible if you are willing to do the work. Sending lots of love to my people who have been on this journey with me."

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