I'm very sorry, and I'm also very sorry that you are clearly out of sorts with life, but this isn't making any sense as an explanation of your income.
Increase in the value of stock holdings is not increase in income, that money stays in the shares until you sell them. The value of the stocks falling will not affect your income, only a fall in dividends issued by your company will do that.
Of course if you are being given more shares each year, then your dividend payments will increase your income but it's a bit difficult to envisage you being given as many shares as would get your income up as high as it is from dividends. You would be worth many millions in shares alone. And in any case that's not what you are saying is the source of your £85k a month.
You are a truly extremely rare individual to earn such sums by coding, and, as you say, living proof that money does not buy happiness. I can say though, as someone who considers themself well off but is voluntarily estranged from family support (ha!), that I think it's a darned sight easier to cope when you can afford anything you want than if you are scratching around to pay the increases in the bills.
I hope you find some answers in the coming year and can arrive at a more content place in life.