Long after Oliver Thompson-Smith's physical injuries had healed, the young man was still suffering.
As a 19-year-old student on a night out in Chester, he had been brutally stabbed and mugged, near his home.
"I couldn't let it go in my head. It was always there," he says. "It started creeping into my nightmares."
He bottled up the fear and trauma for four years, before a suicide attempt prompted him to seek help, perhaps surprisingly, from his manager at work.
But Oliver is by no means typical. Around half of us would not be happy to speak up at work if we had a mental health problem, according to a survey conducted by Comres for BBC Radio 5 live.
The survey asked 1,104 British adults in full-time employment about their attitudes to mental health. And 49% said they would be unlikely to tell their boss about problems such as anxiety, depression or bipolar disorder.
Only 35% said they'd be happy to tell colleagues.
Excerpt from BBC News, read the full article here