Has your belief system sucked the air out of your ideas balloon?
Without careful attention, belief systems can become rigid structures, a dogmatic vacuum all thoughts and ideas are filtered through. A rigid belief system always results in the same thing - a closed mind. Getting your ideas balloon to expand involves being open to different ideas, especially those that run counter to your own.
It's at this intersection of belief and assumption where new ideas can take shape. It's a tough corner to hang out on, but it's worth the blood, sweat and tears to have new ideas rise, inflate and float to the surface where they can be used to write a better book, be a better parent or run a better country.