I downsized my life in 2 steps:
1) During COVID I cleaned out the accumulated junk in my life. Donated most of it and threw the rest out which took a few months.
2) In 2022 I cashed in life and moved to Paris. Sold my house, car and donated/disposed of the rest. On my final flight to Paris I brought my Surly Steamroller and a few clothes. I've downsized from a 2100 sqf house to a 375 sqf apartment. I have no regrets and do not miss my big US lifestyle.