Here's a quick check.
Go to your Sent folder (in Outlook, or Eudora, or Lotus, or whatever) and see how many of your sent Emails are "Fw:" or "Re".
If more than 75% are "FW" you're a Postoffice, just passing mail around.
If more than 75% are "FW" + "Re", you're at best an Inquiry Office, reacting to the events around you.
When was the last time you started something ?