Please don't be too embarrased to go to the doctors, ive done hysterical too but they have seen it loads of times before.
Sometimes life can be too much and we need something to bring us back on top.
Thing is, im all a bit about life coaching - yes, sometimes a positive attitude can help, but sometimes its physical, it might not be physical at the route of it, but there is only so much stress our bodies can physically take and we become deplete of "happy hormones". We often need to take medical steps to putting that back on balance - the medication that is on offer now is not like it was in the 70/80 they don't zombify you and change your personality - they just take the edge off the anxiety - they don't work by giving you "happy chemicals" they work by helping you to utilise your own, almost natural!! Almost! Do be aware that whilst st johns wort is very effective, it can NOT be taken with the sort of ADs that im talking about here and there needs to be a gap of at least two weeks between the two.
I do understand about the business, you are not alone - my DP and I have been through exactly the same thing. Wasnt really an option for him to get a job really and we are now (please god) starting to get back on track. It nearly broke us though and i have to say, with hindsight, it wasn't worth it.
Sometimes it can be pride with this sort of thing - ok so he needs to keep plugging away, but thats probably COSTING money rather than brining any in. Its almost a shame that you have ended up at hte inlaws because that is fascilitating the route he is taking. If i were you, i would set a date, and say that if there is no headway with the business then thats it - either he gets a full time job, or you do, but not at night, its no good. We did this, we said, right if its not working by september (last year) then its time to say enoughs enough - It motivated DP and apart from some hiccups that were out of our control the business is doing well. When we clear our debts we will then be able to relax and build it up into something that hopefully will make me think it was all worth it - but tbh i dont think anything will, not really, ive lost years to depression and i know that was at the route of it.