Affiliate Marketing Secrets

I have a definition essay due in a week. And I am wanting to know if this would be a good topic ” why i enjoy writing/blogging and why it would be a good career” my other topic that i just thought of would be Why online media will gradually replace print media and how print media could be come a niche” just would like some feedback on if the either of those topics would be good for a definition essay. thank you for your input