Anyone else become scared stiff as they put hours in?

So in the morning, when I make my coffee and I boot up this game, I will be extremely aggressive in the sense that I am ready to hunt zombies, protect my territory, build, gather, you name it. Let's say if I take a break, go to work, then come back, I start off with that same feeling, but as IRL evening comes on and I play and play and play, eventually I find myself becoming less vocal, scared stiff, and paranoid from a single zombie even bashing on my barricades. I am terrified of even going out to kill it, despite me being overly prepared. Does anyone else experience this? I am literally horrified, acting as if I am in the world of my character. If I go to bed and close out the game, the next morning I will be absolutely fine and will be active, but I find myself being useless as I put hours into this game. I always start super ready, and end in silence, fear, paranoia, and quite frantic. I envy anyone who doesn't experience this.