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