Nothing quite compares to that first database deadlock. Not your graduation. Not your wedding. Just you, two transactions holding locks on each other, and the sudden realization that your carefully crafted SQL is now participating in a Mexican standoff. You'll Google furiously, discover isolation levels exist, add some retry logic, and emerge victorious. Your spouse will ask why you're so excited about fixing a bug at 2 PM on a Tuesday. They wouldn't understand. That deadlock changed you.