I've been doing this for years. Not "Mariekondo-ing," but "dostadning" (Swedish "death-cleaning"). I'm not even close yet to achieving the "tidy" state, but I can affirm that great pleasure can be derived even from the early stages of finally getting rid of accumulated things (books, records, videos, clothes, souvenirs, memorabilia). I also found that using "linkdumps" helped me trim down thousands of accumulated bookmarked websites. There is a real joy to be had from letting go of things.
I will second that recommendation. Local chapters are great places to meet people, especially at activities like monthly games nights or occasional field trips. The ubiquity of such groups can ease a lifestyle transition such as moving to a new city.
16-hour shifts are for modern wimps. A routine shift for residents and interns in the early 1970s in charity hospitals was a 32-hour shift (arrive Monday morning, be on duty all night until finish the following afternoon, sometimes without sleep). Repeat cycle every three days (later liberalized to every four days),
Case closed.
My father used to say "I love work. I can sit and watch people do it all day."
http://tywkiwdbi.blogspot.com/2013/06/the-easiest-way-to-get-six-pack-abs.html