Dealing with clutter

How do you deal with clutter? I am getting up to my ears in spam, emails, and junk on my desktop and that is just in the virtual world.

The real world has drawers filled with bank statements in random order, too many clothes including many I don't wear and an untidy room!

So I have to make a list, lists are my only way out of clutter. Make sure I do each task, not necessarily in order but at least so I can see them ticking off.

Have you had much luck with lists?