After a lot of fiddling around with politics and other topics, here is a classical minimalism post.
Pick up every single item you own and ask yourself: Can I be happy without it? If the answer is yes and you want to be happy, then why do you own it? Remember that happiness is not a destination. You can travel to Rome by plane, but you might as well go there by foot (if you live in Europe). There is no reason not to take a vehicle that gets you there faster. But with happiness it's an entirely different situation. It's not a goal. Certain things don't get you "closer" to happiness. So if you don't need them to be happy, then owning them is completely irrelevant in this regard.
So what it comes down to is clothing, food and a roof over one's head. Sorry, it's as simple as that.We may need special items to carry out our work, which in turn provides the above. But all the fancy stuff we keep in our houses are basically toys. It's not wrong to have them per se. Yet we should keep in mind that we don't need them.
The reason for doing this is that you create space (in your mind and in your place) for what truly makes you happy. Among a lot of virtues that differ from person to person, it's essentially just one: Love.