Yes, I know - training away is a great deal like vacation in that you essentially rely on the output of others - those that clean, those that cook - and systems in place to manage the rest, like laundry rooms or showers/baths. And of course it relies on the fact that one does not actually have to earn a living while one is away. So in a very real sense, it is a sort of artificial environment.
But even within that artificial environment, there remains a kernel of truth: I can get by with a great deal less than what I currently own.
Our home is approximately 2400 sq feet, not including a two car garage (223 sq. meters for my Canadian friends). And it is full - pretty much completely (we are spared the spectacle of the outdoor storage unit known as the "the shed", which is really just a resting place for items you have no intention of every using and instead becomes a collection bin for spiders and rodents). It is not "hoarder" full, but every room has a great deal of stuff in it.
To be fair, there is a rather large personal library that occupies a great deal of wall space (that would be mine). And, just like any family, there is family memorabilia that one simply acquires and is here for the duration.
But for the rest of it - what we use periodically or even not at all at this point - there is the legitimate question of asking "why"?
Part of the focus of the materials of one's life is defined by what one does: the workman has their tools, the farmer has their tools, the hunter has their weapons for killing and the tools for preparing, the cook the pots and pans, the swordsman their swords. The narrower the focus both the more and the less one needs: the more as one acquires additional expertise and skills (watch a woodworker or stone carver with their chisels: who knew there were so many?), the less as other interests and activities fade and the materials that support them are no longer required.
The other focus is that of regularly moving the items no longer used on. I suspect for many - at least for me- this a highly resisted activity: every item we have represents an investment from ourselves or others, money and time we spent. To just surrender them - even if we sell them for pennies on the dollar instead of just giving them away - somehow represents a "loss" to us, even we have not used the item for years and never intend to use it again.
Do I have an immediate response? Not really - I am still trying to sort out my own life, to figure out what is remaining and what is staying. But I am discovering one fact: the more time I am spending thinking about what I want my life to be focused on, the more I am finding that items I have held on to have less and less importance. And less importance, if I can hold onto the thought long enough, represent a willingness to cut the cord entirely.