Once I had the minimalist bug, I wanted to run around telling everyone about minimalism like an evangelical preacher, about how you could be happier and have more time. But the word minimalism will give people all sorts of negative ideas of becoming a monk, or a recluse, and will very quickly turn people off.
One of the reasons that minimalism is beautiful is that there are as many versions of minimalism as there are people. That means that there are minimalists who will do things very differently to the way you will. Some of them give up the life entirely and travel the world.
I would recommend you don’t tell anyone that you are a minimalist. If you do, prepare for everything to be judged and commented on if found wanting.
The best way to preach minimalism is to practice it until people ask you what it is that makes you so happy