Why Does this Happen?

I've just looked at next week's schedule. I'm quite sure that I need to put a warning label on my Daytimer for weeks like what we are about to face:

Take a deep breath and buckle up.

I have a meeting on Monday. I have two meetings and an evening event on Tuesday. I have three meetings and an evening event on Wednesday. I have a huge FedEx deadline on Thursday. And I'm not even considering what Kelly's schedule looks like, other than that he's attending the Tuesday and Wednesday evening events with me.

I wonder what leads to schedule overcrowding. I've worked hard to keep life-work balance, with relative success. However, when things go awry, they go awry in a big way!