ESSAY ABOUT LIFE LESSONS

Hi,

I need an essay for my teacher about a lesson that i learned alot of things from.

what is the lesson ?

how did the lesson affect my life and how did it chenged me.

I told my teacher that the outline is i didnt study for my exam and because of that i didnt pass the subject

so, i prefer you write about that situation. also, i dont want it to be professional please. im just international student who is studying english.