Streamwriting is simply writing nonstop what is in your mind, unedited until your conscious mind gets out of the way and allows your superconscious to do the talking.

Word your problem using specific language and make the wanted outcome sound fun, exciting or pleasant. For instance, a question like "How can I earn an extra $1000 this month and enjoy the process?" would be better than "Make a $1000."

Then, beneath your question start writing everything that pops into your head. Write related and unrelated thoughts that come to your mind. Keep your pen on paper and do not stop writing to think or get back on track. Your brain knows the problem, so you don't need to consciously think about it. You need your conscious out of the way.

When you run out of ideas, keep writing anyway. Write "I am stuck" or "I can't think of anything to write." Don't worry your conscious will likely get bored and let the ideas flow. Or you will change the subject to your goal or another side road that leads to the breakthrough. Just relax and keep writing.

Via here