Ritsha

If I am writing an essay that relates to my opinion, how do I avoid using personal words, such as I, me, and us?

I am trying to write and essay with the topic: Discuss the influence that advertising has had on your life or te lives of your friends. My thesis is Shoe advertisements have influenced me to spend more money than food advertisements. My points for discuss...

How do you start a thesis sentence with the subject on computers? Is this sentence a thesis? Computers are becoming more useful.