"If you asked my family or friends what they thought about me," says Leddin, "they'd probably tell you that I'm a happy-go-lucky, positive, hard-working and confident guy.

"But all that's a bit of a lie. You see, I'm living a completely different life inside. I'm living the life of someone who suffers immensely with depression. And this is so hard for me to talk about, but it's not just me."

Leddin, who works as a marketing manager for an Irish advertising firm, says he made the film to break down the stigma that still surrounds mental health. Last year, he says, 550 people took their own lives in Ireland due to depression – more than the number killed in road traffic accidents – yet still safe driving campaigns are more prevalent than those who suffer mental health issues.