If you have a large number of collections, you may find it helpful to hide those collections you are no longer actively using. Hide a collection from the My Collections tab of the Catalogs page by selecting the minus icon:
This will effectively remove those hidden collections from your My Collections list. Your collections will still be there, of course. You can see all hidden collections by hovering over the number of collections in the righthand corner of your screen and ticking Show Hidden Collections:
You can make a hidden collection active again by clicking on the plus sign make it visible:
