Really what you’re saying is you’re out of ideas that you feel good enough about to put forth as your ideas.
Your mind hasn’t actually gone blank.
Minds don’t go blank.
You might recall what you with you could recall. You might not think of what you wanted to think of. Instead, another thought came into your mind. Perhaps it was a random thought, or a thought you’ve decided is sub par, or the thought that you have nothing more to say and now need to express that fact.
We spend more time talking about how stuck we are than we doing getting unstuck.
You’re never out of bad ideas.
We can’t tell good ideas from bad ideas when they’re young.
Thus, who is to say how good you idea is before you share it with the world?