The creative create flow state can be entered consistently if the conditions are right. For me it's a fairly routine process and has nothing to do with luck. I've been entering this state regularly since I was 10 years old.
Those conditions include:
- clarity of purpose (having a sense of what I want to create and why, doesn't have to be crystal clear when I begin though)
- a private environment (i.e. cave) with a door I can close and lock, thereby isolating myself from the outside world
- an open-ended schedule (i.e. at least several continuous hours available to work)
- the ability to disregard interruptions (may require coordination with others)
- very quiet, but occasionally some classical or non-vocal new age music, fountain running OK
- prior mastery of whatever tools I'm using (I can't enter the flow state if I'm using new software, struggling with a new programming language)
I might expand the above into a full article, since I'm sure there are other conditions I missed because I take them for granted.
The typical corporate environment doesn't provide enough of these conditions, especially if you live in cubicle city.