As a Professional Organizer I have helped with organizng many closets. Here are just a few things that will definitely make a difference in keeping your closets organized.
1)Use baskets or bins to help contain like items eg: scarves, belts, hats
2)Cube shelving can help with containing items.
3) If you are not one to like hanging your clothes then, if space allows bring in drawers into your space.

Remember it doesn't have to look picture perfect it just has to be functional.