Ivanov Revival

Nikolai has forgotten how to be happy. Or was he ever? Is it just burnout? He's married to the perfect woman, he's had a successful career: he should be heading into mid-life feeling confident and settled. Sure there's some debts piling up, and his wife has been laid low with unexplained illnesses recently but they've jumped bigger hurdles before. What exactly is gnawing at him? Why does the world feel like it's falling apart? Maybe he just needs to shake it off. There's a party at the Lebedevs tonight!

Can Nikolai save his marriage, his will to live, and his career all at once? Or was it always destined to go tits up?