When in doubt, speak up. Talking is a tool for excavating thoughts—microphone in hand or not. It's only after the speaking occurs do the words begin to flow.
The same goes for writing. One doesn't need an audience in order to do it. The movement of the pen gears the brain into motion so that words hit the top of the tongue at precisely the right time.
“The pen is the tongue of the mind.”Horace
Speaking and writing cue the neural pathways. They lay the groundwork for ideas to germinate and bloom. Chatter, whether external or internal, are the firsts step in solidifying beliefs and discovering something interesting to say. The real enemy is a chattering brain that hesitates and never spits it out.
Inspiration and perfection are for amateurs–start before you're ready.
photo via giphy