Pardon me for dragging this stuff in BUT
about 20 years ago I changed religions to Hinduism.
One day I discovered the Brahma Gayatri. Lemme explain. Brahma is the creator in Hinduism and the source of all creativity. A gayatri is a specific mantra which counts to 21 syllables, follows Gayatri Metre, and both describes and invokes the attributes of the deity addressed. So, in search of creativity, about 15 years ago, when I discovered this particular prayer, I have been chanting it as a mantra whenever I need creativity. For me, it works, and whether or not that is self-fulfilling prophecy, well, that is your take. For me, it works, I believe. Here it is:
Om Parameshwaraya Vidmahe
Tanno Brahma Prachodayat