Minimalism is about having everything you want and nothing you don't. It's both a way of life and a design principle.
Everything You Want
What do you truly love? What does luxury mean to you? Minimal doesn't mean Spartan. It isn't about living without. It's about indulging in what you love. Only you can define what that is . . . travel to a foreign land, sipping your favorite scotch by the fire, an original piece of art, court side seats . . . whatever makes your heart smile even when nobody else understands why.
Nothing You Don't
Defining what doesn't matter to you is as imperative to crafting a great life as knowing what does. Shedding the extraneous frees you to splurge on the sublime.
Cluttering your life with things you don't want spawns a downward spiral that drains your resources . . . money, time, and energy. The drain isn't just from the money you initially spent, it's also the cost and stress of storing and maintaining items superfluous to your happiness. Out of site is not always out of mind.
Not really a car guy? There is no reason to own a luxury model. . .consider whether you need a car at all. Is it reliable transportation that you're really after? Does ride sharing coupled with occasionally renting suit your needs? Question every expenditure. Do you really want this thing or experience, or is it just that someone has convinced you that you are supposed to want it?
Minimalism is about hunting your best life. What do you really want, and what is distracting your pursuit of it?