It is your first year, come off the ledge. We all had times, situations or games where we did not preform well. It was just a bad situation, do not treat it like a tragedy. No one expects you to be the best of the best at all times at this time of your career that has officiating experience. Learn from the experience and try not to repeat the situation. You know how it feels, and unless you like the feeling do better and find out what it takes to do better. Maybe you just were not focused or thinking too much. It happens to even veterans, but most of us know why we did what we did to not make it a consistent thing.
You will be just fine. Use every game as a learning experience. You just learned something. That makes it a great day.
Peace