As we wrestle with the physical effects of suffering we are mentally brought back in touch with the source of all blessings. We focus on God and what he has done and can do. The suffering of Jesus was among the most graphic injustices in recorded history. Yet, as the innocent victim he suffered that we might live for ever. God may use suffering as a form of discipline.
Parents disciple imperfectly in the way they think is best.
God disciplines perfectly and therefore it is always the best for us. Strengthen ourselves to face it. Notice God doesn't guarantee freedom from suffering. Instead, he encourages us to be prepared to face it with the understanding that if it comes as discipline it is for our benefit. Suffering may be a way God is disciplining us.