When you live as a minimalist, you strive to only use things that serve a purpose. It's about living simply and having only what you need to go about your daily life. For instance, some people may start a no-spend challenge or only fill their home with items they absolutely need.
Extreme minimalism is about choosing to live with the absolute essentials and nothing more. Examples of extreme minimalism include willingly living without furniture and owning less than 15 items.