The step back:

We hold a problem in our minds and it frequently exists nowhere else in as descriptive a form. That can be really difficult, because things we hold in our mind and nowhere else have the tendency to change subtly every time we examine them, like reading a book in a dream. Trying to hold a detailed, complex idea in your mind for extended periods of time is basically impossible without progress that allows you to transfer the idea to something concrete and stop remembering it.