Dwayne Johnson

'The Rock' has been successful in both WWE and acting but has battled depression and urged sufferers to realise that they are not alone in their torment.

In a YouTube video, he said: "I found that, with depression, one of the most important things you could realize is that you're not alone. You're not the first to go through it; you're not going to be the last to go through it. And oftentimes—it happens—you just feel like you're alone. You feel like it's only you. You're in your bubble. And I wish I had someone at that time who could just pull me aside and [say], 'Hey, it's gonna be OK. It'll be OK.' So, I wish I knew that."