Mental health stigma should not be a thing in Anno Domini 2019. The brain is an organ, like lungs and pancreas. Like all the organs, it can suffer several forms of damage and malfunction. Yet you don’t hear people say “asthma is only in your lungs”, or “you are too dependent on insulin, have you ever tried not to be diabetic?”. So why are many still considering mental illness a matter of willpower?
Anxiety is not "feeling quite nervous before a job interview". Depression is not sadness, nor laziness. We should stop trying to define other people’s experience on the basis of our own.