I'm committed and dependable. Give a specific example that explains actions which show your dependability. Showing isn't bragging. I'm a great leader. Write for a specific audience and purpose 1.
Advertisers know that targeting their product to a specific audience is good business.
Think of someone who's reading her 123rd essay of the week, at 4 pm Friday. Read and re-read the essay question. Connect your past accomplishments to your future goals. If a length has been specified, meet it. Remember, though, that the temptation with shorter length limitations is to tell lots of things quickly rather than to show a few things clearly.