Research your idea. See if there's a demand. A lot of people have great ideas, but they don't know if there's a need for it. You also have to research your competition.
“Absolute faith can blind you to the consequences of the actions you allow. It can tell you it's okay to drop bombs on another country, or that it's okay to hate a group of people such as homosexuals.”
“It's totally mistaken to suppose that an armed escort is going to give a journalist any protection - on the contrary, journalists who turn up surrounded by armed personnel are just turning themselves into targets and in even worse danger.”