To do creative work one must not wait for inspiration or motivation, one must do the work. To do the work is to appease the Muses. They cater to the devotion of the attempt, to the ritual of respect. For example, sitting your butt in the chair with fingers at attention upon the keys and wading through whatever viscosity your imagination may be at the time, just getting it OUT of your head and INTO this world is the first step.
Sandstone walls and oily sludge ideas will move you forward or hinder you, stuff that cannot hold will crumble or burn away. From this crumbling, this immolation, this failure, persistence will reveal ores, gems and artifacts. But most of the time these precious ideas are raw or fragile. They need to be refined after being mined. That takes care and deliberate function. Trust the process.