The UK paradox: how can a country with terrible weather, terrible food, everything is outrageously expensive and the people are weird be the greatest country in the world?
The single most under-rated thing a UK man can do for himself in his thirties is a 3-day solo trip to a city he's never been to, twice a year.
It doesn't have to be expensive. A £40 train to Edinburgh in February, an £80 Ryanair flight to Porto in October, a £25/night hostel, a notebook in your jacket pocket. Total cost under £400 for both trips.
The problem-solving part of your brain runs on routine in your hometown. Take it somewhere unfamiliar for 72 hours and it wakes up. Every decision you've been turning over for 6 months gets answered on a 4-hour walk through a city where nobody knows your name.
The men I know in their forties who quietly built the lives they wanted all do this. The men still stuck in the same job and the same head-noise at 38 mostly don't.
Also the thriving 6am scene of Romanian blokes having a Red Bull+cigarette+espresso+water all at once standing up. An earlier iteration of this crew also had a brandy with it but I think places are stricter on this now