Some thoughts or ideas occur to me, and some do not, and that is important in all matters, from cooking at home to writing poetry. I wonder if there is some philosophy or psychology written on what occurs and does not occur to a person. I checked "creativity" in Wikipedia, but the article focus on only a small part of things that may occur to a person. This subject seems interesting to me because it seems that we cannot make a specific idea occur to us (we would already have it if we tried), but, on the other hand, the kind of things that occur to us seems to be an important part of what we are (different ideas occur to different persons in the same situations). Would you give me some guidance?