Just done a quick whizz through the site to patch up all mentions of
Blumenfeld's advice (which was passed on by Kotov and Webb in their
best known books). The advice is:
Six positions to consider, A-F; pick one, perhaps the one in the top
left (A). Now, I want you not just to think
up a move, but notice how you think it up. You will need to write
down your thoughts, or get someone to write while you think. Off
you go, take as long as you like.