Life Review: My story of how powerful I am

I'll jump in right to the point, I had my internal exams and prepared for an exam, let's call it "A", alright? I had been keeping up with the class lectures (of all the subjects, and not only for subject A) and class notes and even presentations for my faculty and my fellow classmates. I was ready to rock. Before the exams went on, I had a brief look at the datesheet for the exams, I told myself that everything is sorted and the ball is my court. 

But there's something about carelessness and fickle mindedness that slaps you in the face with a brick. I didn't check the datesheet a second time. And I went to write my exam. 

To my utter surprise, I had exam of subject B that day, and it was like the land slid off the ground and I started tearing up right in front of my professors and Dean. It was pretty hard, but I had good guidance from my faculty members. They just told me to write what I knew. 

I was ready to face the consequences of being not attentive of my surroundings and the life around me, but again, to my surprise, when I saw the question paper, I knew about 95% of the questions in it. I let out a big smile, like a kid who got his candy. 

I was attentive in my class lectures, and it was sufficient with my previous self study to answer every damn question. 

So, the long taken point is, whenever you feel you're going to be facing trouble, it ain't trouble if it's not teaching you something. And if it doesn't teach you anything, you wouldn't really know how powerful really are when you actually face the situation.