Come learn 2000+ kanji and 6000+ vocabulary words with WaniKani.
You already know that 循環 means "circulation" or "cycle," so adding bad to that makes it a vicious cycle.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
First of all, it’s important to cut off the vicious cycle in your heart.