Ritical Thinking: Kants means to an ends/end in themselves?

Please provide an example that would support Kants The Formula of the End Itself statement: Act in such a way that you treat humanity, whether in your own person or in the person of another, always at the same time as an end and never simply as means.a?
Please form your personal example in the APA 6th edition format, in 300 words and make sure you double check your spelling and grammar.
Thank you!