I know it's rubbish if people think you must be ok becase you look ok. But that's because it's always people who don't see me during the 'bad times', of course I look ok at that moment or I wouldn't be out and about meeting them. However it's usually the same people who can't understand why I'm not employed or heavily involved in something like volunteering. Which I'm not, because my MH issues do significantly impact on my life.
I am happy to believe you when you say you have a diagnosis of severe depression and anxiety, and I'm sure it feels like hell in your head, however I find it hard to understand how that doesn't impact on your life more.
In some cases - don't know if this applies to you OP - the type of job makes all the difference. owlborn says "I... periodically hide in the toilets and shake, psych myself up for every meeting and work from home some days because the office is too scary. Clearly this is not possible in a lot of jobs. I have been fired so many times due to MH simply because I looked unhappy (tears forming in eyes whilst trying to keep fake smile plastered on), was shaking, get confused and muddled when low/overwhelmed, that sort of thing.
In another way I look ok day-to-day, eg. my flat is clean and I eat ok (when I don't feel too sick with anxiety.) However, I actually clean when stressed/anxious as a coping mechanism, and going to the shops is a half hour thing so just requires coping for a short while. So I can sort of see both sides of this!
However, I thought to diagnose depression/anxiety they had a scale rating thingummy? I can't quite understand how it would be possible to score highly enough for the 'severe' label without it impacting on yor life more, simply becaue of the type of questions asked.