Been re-reading a book that was given to me 14 years ago that covers ancient church disciples, one of which being simplicity. The challenge is to create a habit of giving things away, almost at random, until you learn to live unattached. It takes a while to do, but once your start it’s an addiction. I’ve had friends compliment my jacket only to find themselves becoming the new owner shortly after. I’ll often buy myself a treat on the way to work only to gift it to a coworker who mentions that forget to eat.
My only warning is this: It becomes addicting. Seeing people respond positively to being given things, especially things that might not have meant a lot to you, but now will mean a lot to them because you gifted it to them, is wonderful. You’ll find yourself wanting to give away everything all the time.