The central thesis of 'The little book of Flow' I linked to above is that those sublime moments when we get in touch with our inner spark, where inspiration gushes, answers flow from us before the questions, and we have all-on just keeping up... are simply the moments we, per chance, relax into our true nature, our natural (though perhaps forgotten) state. Notice that these moments invariably occur when we are happy and relaxed and the mind lets slip it's incessant control over of our life.,, and we suddenly feel more alive and connected to everything. If this is true (and it's not difficult to test this for ourselves) then what preparation or effort or understanding could be needed to know our own nature?
Of course, the ego doesn't want us to hear this - as our 'self-concept' it's under threat as once our mind expands to a greater awareness of reality it's impossible to shrink back again. So it's the nature of the ego (the human condition if you like) to believe that we must strive, practice, seek answers. But that doesn't make it either necessary or true.
At end of the day it can, if we wish, come down to a simple choice: - Shall I be true the truth as I find it - 'the spark', or true to the latest idea about what is still needed?
What I am long-windedly trying to say here Shiro, is that from my experience the problem is not the 'obstacles between the spark and the outcome' but the belief that there are obstacles between the spark and the outcome that need to be overcome. Does that make sense?