It's unfortunately very hard to isolate creativity from many competing and interfering aspects. Is an artist creative or are they successful in a field where by tradition every piece must be different (say, music videos). Is an engineer creative because they live in a discipline of severe constraints (say, spacecraft at the edge of the possible). A known issue for artists is having a recognized body of work: many new clients now want some of THAT - and not the precursors of the next body of work, so the artist feels the pressure to produce more of THAT. Is creativity only recognized (and so, favored) when it's followed by success? What about mechanical aspects of creativity - like good executive skills / habits? How about helps from the environment: constraints are one, but also early viewers, managers, critiques, partners that are encouraging - in the right way. "Practice"?! In what? "Taste" is a known aspect with the recognition that it can be hard on newcomers who may already have "good taste" but not yet the technical, gestural skill to produce and meet that bar. Teachers (in all meanings) that make sense and are capable of explaining how they or others operate. And on and on.
So I have been trying to focus on specific antagonists. Recognizing what forms of creativity matter to me; Solving for "block"; Solving for "time".