Your essay must have strong roots, and support one side of the argument. And example of this would be if you are writing your essay about immigration laws, you might shed a light on the social issues that are involved concerning illegal immigration. And what hardships Americans face due to the overwhelming population of illegal aliens.
Talk to your high school counselor, or your college adviser. They can give you some essay examples, and you can have them proofread your essay once you are done writing it, these professionals will have insight into what the admissions officers are looking for in an essay. And it is always a good idea to have one or two people read over your finished essay in order to make sure there are no grammatical errors.
Essays are personal, the best of them can seem like conversation with an intelligent, provocative friend, but one with remarkable discretion in editing out the extraneous. Whether the word ”I” appears at all, you must be in your essay, and pungently. It can't be simply ”How I Spent My Summer Vacation”; it must be ”How I Spent My Summer Vacation Tearfully Mourning My Dead Ferret.” Never hide in an essay. Essays aren't formless dough, they are the baked bread, hot and crusty. Cranky, apprehensive or playful, your candid voice should be a constant: you don't want your essays to roar like a lion in one paragraph and bleat like a mewling lamb in another (unless it's done for effect).