int main(int argc, char **argv) {
The trick of writing /something/ down, no matter how trivial or wrong, is that now you've got something to work with.
If it's the declaration of main(), the next step is staring you in the face: what's the first thing I need to do in main()? Process arguments? Cool, I know how to write that code. What are the arguments? I don't know, how is the program going to be used? And like magic, now we're designing the interface to the system; that is, we're actually doing the real work.
If it's a piece of writing, write an opening sentence. Anything will do. If it's terribly wrong, how can we make it better? If it's roughly right, what's the next logical thought? And the next? And the next? Now, how can we cleanly end this paragraph and lead into the next one...