Walk. Walk amongst the patterns of the mind. Is there a pattern? Walk more.
Play with the notion. Let go, play some more.
Trust the nudges; knowing they may only be a path to learning, but not the end result.
Play with someone else.
Trust the intelligence of the body.
Don't trust the intelligence of the body.
Listen, probe, look, and prepare.
Consult your heart, but ...
Walk with someone else.
Read something on a different topic.
Listen to new music.
Ponder visual art, perhaps abstract art.