The hardest part about cleaning out your closet is deciding what you still wear. Here is a simple thing to do so you can get that information with real data.
Get all the hangers facing one way: If you're like most people you already have them facing in the same direction. We are creatures of habit so your closet probably looks like the image below.
Invert the hangers so they are all facing the opposite direction. This is the way you normally DON'T put your hangers which is why this works so well as a red tag event.
Wear your clothes as usual and when you hang them back into the closet, hang them as you normally do. The clothes you wear will be hung the normal way and the clothes you don't wear will be inverted.
After a defined period of time ( I set my Outlook calendar to remind me) look at your closet and see what you're wearing and what you're not. Now comes the hard part. If you're not wearing it...you have to come up with a good reason to keep it or you should donate it to someone who is in need!
I hope this helps you as much as it did me. Now that you've read this and looked at the pretty pictures go immediately to your room and invert all the hangers so you don't waste 1 more day.