The cloud knows when to release the raindrop. It is not a thinking kind of knowing, it is a being kind of knowing. It releases into the law of gravity. Water molecules condensed to form droplets, they collected to form a cloud. When the cloud becomes too heavy, the droplets fall as rain. The cloud knows when to release.
There is an inherent wisdom in nature’s cycles. The lungs inherently know when they are satiated and they release. The heart knows what comes next—after a drawing in, a pushing out. Thoughts come and go; emotions rise and dissipate. You have so many guidance systems at your disposal, so many opportunities to release into the knowing.