Back on topic, agree with Auldspinster that a generation or two ago large numbers of mothers would have been given tranquillisers to cope with it; there's a reason they were called 'mother's little helper'.
And men were more likely to drink to cope heavily with it.
In some ways, class and educational expectations changing have increased rates of depression and anxiety, I think, because they have increased expectations without really improving lives. So a generation ago, the average young person might leave school at sixteen and not dream of going to university, but could still end up with a job that earned enough for them to buy a house, bring up a family, get a pension and have a reasonable quality of life and some security. And their mates would be living similar lives.
Now, the same person would be much more likely to go to university, where they'd mix with people from a broader range of backgrounds, and would be expected to have a higher paying job and more material success. But because times have changed, they'd leave university with tens of thousands of pounds worth of debt their parents never faced, will have only a fifty percent chance of getting a graduate level job and that is unlikely to be secure, haven't got a cat in hell's chance of affording a property in large parts of the country (most of the parts with a choice of jobs) and can only afford to have kids by building up debt. Then they face having no pension. But all their mates are not in the same boat; the friends they met at university from rich backgrounds will have been gifted deposits or even properties outright, eased into jobs etc. So not only are their lives harder than their parents but they feel worse off than some of their contemporaries too. With social media to highlight this in full technicolour.
So give them (and yourself) a break.
It's not depression if it's a logical reaction to tough times. It's OK to feel sad or frustrated about that.