Yahoo Finance has a great post by Penelope Trunk about ways to be more productive. It's a great list and if you're one of those folks who always thinks you could be doing more, then this is for you. I say that because I tend to think that a lot.
Here is one of the sample steps:
Keep your inbox empty.
Your inbox is not your to-do list; your to-do list is something you compile and prioritize. If your inbox is your to-do list, then you have no control over what you're doing -- you've ceded it to whoever sends you an email next.
Productivity wizards experience less information overload because they deal with an email as soon as they've read it -- respond, file, or delete. Nothing stays in the inbox. Reading each email four or five times while it languishes in your inbox is a huge waste of time, and totally impractical given the amount of email we all receive.Go here to read the entire post.