Depression can rob you of your confidence, energy and sense of self. It can make you feel small and breakable. With similar ruthlessness, anxiety can meddle with your rationality, perspective and self-possession. Both these astoundingly common conditions can make you feel miserable, panicked and incapable. How are you meant to get through a day at work, when you’re feeling like that?

The first thing you should know, from me, is that you’re not the only person who’s felt like this. You’re not the only one who’s had a panic attack in the office bathrooms, or cried at their desk, or confided in someone beside the biscuit tin. Three million Australians live with depression or anxiety – which may be an alarming statistic but it’s also proof that you’re not alone, which might be a comfort.