Not just humor, but the overall tone of your application essay is remarkably important. It's also difficult to get right. When you are asked to write about your accomplishments, those 750 words on how great you are can make you sound like a braggart. Be careful to balance your pride in your achievements with humility and generosity towards others. You also want to avoid sounding like a whiner -- use your essay to show off your skills, not to explain the injustices that lead to your low math score or failure to graduate #1 in your class.
A college essay is the time to explain more about you and your life. This can be done by writing about a favorite activity, telling a story that you experience, or make up a story to show your even more creative side. Whatever you decide to write about make sure you start by drawing the reader in right away. Then it’s up to you to continue building upon this momentum like your building a skyscraper one floor at a time. Then remember to express an overall positive message on your essay. This is a good way to leave the reader with having a positive light on you personally .