to cut (cloth, paper, etc.); to cut off
to sever (ties); to break off (relations); to give up (an attachment, habit, etc.); to stop (e.g. a vicious cycle)
to cut off (a supply route, enemy's retreat, etc.); to block; to break up (e.g. an intelligence network)
悪い縁を断ち切った。
I cut off bad ties.
過去との関係を断ち切っている。
I am cutting off my relationship with the past.
長年続いた悪い習慣を断ち切る決意をした。
I resolved to cut off the bad habits that had continued for years.