Yea, that's embarrassment, one that I've done more than once. I've since been in the habit of putting all my licenses in a marked envelope in a certain divider on my desk. Last year in a hurry I grabbed a marked envelope without checking licenses inside. It held my bear tag but not the elk tags. When I set up camp and prepared my pack for the following morning I discovered the problem. I had to make the 3 hour drive back home late at night, and returned the next day, missing opening morning. That sucked.
Pack early and double check for everything you're going to need.