Write essay with a hook?

<p>i am currently writing my commonapplication essay and am wondering if i should write about my hook in one of my essays. i already write about it in my 150 word essay, so should do it again for the main one? </p>

<p>please tell me the advantages for doing so? specifically for harvard, do they want a big emphasis on hook???</p>

<p>thanx guuys</p>