You are running for a position in which you will lead others. As @janbb says, you should write why you are best suited for this job, then ask someone to help you to improve your writing.
It is never a good idea to use someone else’s words as a starting point. This will always sound fake and forced, and could get you in trouble for plagiarism. Always begin with what you want to say, from your own thoughts, then work on improving it. If you find you have nothing to say for yourself, you might ask yourself why you want this position in the first place.