As explained in my post for Days 1-15 (which you can read here):
I recently came across a YouTube video of a guy who was doing the 30-Day Minimalism Game. He had seen another creator do the challenge which inspired him - but it originated with the OG Minimalists, Emmy-nominated Netflix stars and New York Times–bestselling authors Joshua Fields Millburn and Ryan Nicodemus.
You know a love a challenge and I was immediately keen to do my own.