...Or learning to love or lose your clothes.
ASSESSING YOUR WARDROBE
First, look at your space. Not for a day or two, but over time. When you move into a new place, buy yourself a couple of wheeled running rails and live with those until you see what works best for you.
Even with an existing wardrobe, do the same thing. Take everything out and put it on the rails. Be brave and have a big clear out at the same time.
Once you know what you want to put back in, count it. Each garment takes up a certain amount of space and you need to allow for that in your calculations. For instance, 50 pairs of trousers will need approximately 1m of hanging rail. Dresses need less. Jackets need more. Yes it is boring, and that's why I'm normally asked to do it!