Work Your Brain

I recommend this exercise from Apogee online magazine to everyone, not just photographers or graphics people.

Apogee Photo Magazine Vol.1 No.5 "Does Your Left Brain Know What Your Right Brain is Doing?"

It doesn't teach you what to think or even so much how.

What it does is make you aware THAT YOU SEE.
Knowing that you see will change your life more than any religious, political or literary text - the world is a book waiting to be read and you only have to look and see.

99.899% of the people I've met in life do not see at all, at least not with awareness that they see and that includes photographers and "artists".