A quiet wardrobe starts with fit, not trend. Choose a trench, a white shirt, straight trousers and a knit in a colour you actually wear, and make sure each one sits properly on the shoulder and falls cleanly at the hem.
Once the basics work together, every new piece has to pass one test: does it go with at least three things you already own? If not, it stays in the shop. The result is fewer decisions each morning and clothes that last several seasons.