The more scholarship essay examples you read the better prepared you will be to write your own essay. The essay portion of your application is the most important. The essay is the first impression and quite possibly the only time you will have the opportunity to give an impression of who you are. And that impression is only as good as the way you write your essay.
As any writer will know they are not the best person to look for any errors or omissions in their work. Read it through certainly pick up some obvious mistakes of course. However being too close to your writing is one of the reasons that book editors exist and of course the same applies to essay writing.
If you are a university college or high school student you have probably benefited at some point in your life from having a coach - either as a member of a sports team or as a participant in an individual sport. No one questions the value of coaching in the world of sports whether it is at the peewee level or in the professional ranks. Athletic skills are developed and refined through coaching.