To much rationality or filtering early on in creativity detrains your mind from being creative.
No dopamine on discovery of the new, prevents that circuitry from running after a while. Write it down, filter it later. Celebrate even ridiculous ideas and approaches, consider them not "failed" nonsense, but in-between-steps as your subconcious works on the next, better solution. Let self-critique not be negative "Ridiculous, never would work with the physics we got" but more "constructive" -"that would be great if we could get it to fly".
Also remember, that your subconscious works with the knowledge it got. It needs input, to create strange mashups. Get your input way outside of your field to not be stuck in the solutions of your peers.
No dopamine on discovery of the new, prevents that circuitry from running after a while. Write it down, filter it later. Celebrate even ridiculous ideas and approaches, consider them not "failed" nonsense, but in-between-steps as your subconcious works on the next, better solution. Let self-critique not be negative "Ridiculous, never would work with the physics we got" but more "constructive" -"that would be great if we could get it to fly".
Also remember, that your subconscious works with the knowledge it got. It needs input, to create strange mashups. Get your input way outside of your field to not be stuck in the solutions of your peers.