If Jesus Christ Himself could ask, “My God, why hast Thou forsaken me?”, I don’t think it’s too much of a stretch to realize Christians can and do suffer so much despair at times that their connection to God can fail.
It’s not that God fails us. It’s that we fail Him and ourselves. That is reality. That is the human condition.
And sense the human condition is constant failure, God comes along and picks us up without any effort being made on our part. One caveat is we have to be His children.
Phl 1:6 Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ: