I made a careless mistake on my Harvard Application

In my last essay, where I was talking about my main ec skiing, at the very end paragraph, “Skiing helped taught me the struggles…” I forgot to delete the word “helped”. I was proud of the rest of the essay and my other essays, and I think my application was really good compared to my other schools. Especially my art portfolio, I spent hours perfecting it. But now I feel terrible that I noticed this. I proofread it many times but since it was the last sentence somehow it got unnoticed. Will this mistake significantly affect my admission?

I would not worry one minute about this. It will not affect your application. AOs know that we all make silly errors like that.