Minimalism is a style of life where people try to minimize the consumption of needless things. It's doesn't mean to live in extreme poverty but to learn buying only essential things to survive. In this way, the money will be better managed.
There are people living in disorganized houses. They don't find important things because they have a lot of unnecessary things. I thing that is a big problem. This days there are many advertisiments encouraging people to buy things that they don't need. So, it's essential to learn to avoid that type of conduct.
Before you go to do shopping it's important to verify the things that you need to buy. Make a list and buy only what you planned. Don't do shopping when you're in a hurry because you can buy things by impulse.
To conclude, to have a minimalism life is a big challenge. So, you need to practice it all the days. I know it will be difficult at first , but you will have great results if you keep trying. Have a organized life, be minimalism.