And for those of us not ready to embark on that journey -
compare yourself down as well as up (i.e. look at those not as well off).
Go camping, come home and appreciate your house.
Drop a level of convenience - if you have a dishwasher, wash your dishes in the sink. Then pretend the tap doesn't work and carry water in from elsewhere in the house. Pretend the clothes dryer is broken and hang your clothes to dry (outside or in), you may never go back. Pretend the clothes washer is broken, realize how much convenience it adds to your life. Same with AC, same with colder house in winter (warm slippers and sweaters make 19oC perfectly comfortable).
Same applies to other areas of life.