I have the same problem,.
It's usually people who have never suffered with depression or anxiety or any mental traumas, before. They think you can just snap out of it and that you can try hard enough, this is not true and there is usually no way or explaining this.

I feel your pain, I have an on going undiagnosed mental disorder, which I have no way of explaining, other than it has ruined my life since I was 11 years old...I am now 20.