You might have experienced anticipating something.
Something like a milestone in your life.
Something towards that day warns.
Be extra careful or you may not get there alive.
Something about travelling scares you.
When the driver tries to overtake, you think he is speeding you up to your death.
Something about doing a certain thing inappropriately,
Brings about your anxiety that might cause an untimely accident.
Things that normally don't matter are magnified into immense proportions.
Behavior is affected only within that period of anticipation.
Senses are surprisingly keen.
Judgment are biasedly anchored towards that anticipated event.
The preparation are all leading to the scene where you are at the center stage.