Never go back! And if what broke you tries reaching out to you again, ignore them. A valuable lesson for everyone to know. If they broke you to begin with then he didn't love to fight and be better for both of you.
A Prayer for times of depression. Psalm – Why are you cast down, O my soul? And why are you disquieted within me? Hope in God, for I shall yet praise Him for the help of His countenance. Amen, I needed this.