Quora.com defines frustration and satisfaction in the following terms:
“Frustration is the feeling of being upset or annoyed, especially because of the inability to change or achieve something.”
“Satisfaction is the fulfillment of one's wishes, expectations, or needs, or the pleasure derived from this.”
Frustration is like physical pain. It might not make any sense in the moment, but it’s a warning sign that something is wrong and needs attending to.