Remember a lot of effort and money is spent into brainwashing us from young ages to be constantly be buying shit we don't need and to feel like we are living bad lives if we don't have it.
Remember it's bullshit, remember that you are more than the fucking trinkets and landfill filling they want you to trade all your time for.
Boycott shit, find any reasonable moral cause as a good reason not to buy something. There's almost always a good reason not to buy something that you don't need.
I feel like it would take just as much effort and basically a whole other upbringing, in a sense, to become accustomed to all the things we were raised with. So i get what you mean, but I dont know exactly how possible it really is, or none of us would really be here, for example.