2 Corinthians1:1-11. Paul is going to respond to some of his bitterest critics in this letter. One of the reasons they condemn him is that they are convinced that he is not worthy to be an apostle since he has so many troubles. So, Paul begins his letter praising God for the severe troubles he has faced. He and his companions “were so utterly burdened beyond our strength that we despaired of life itself” (8). But Paul tells how God brought them through that time of testing and prepared him to minister to others who would face similar troubles.
“Blessed be the God and Father of our Lord Jesus Christ, the Father of mercies and God of all comfort, who comforts us in all our affliction” (3-4a).
Devotions 
So does it follow that the greater the troubles we have the more qualified we are to minister?
It does not. Sometimes we bring trouble upon ourselves by wrong decisions. In those cases, the trouble is not primarily training for leadership. When God is allowing the difficulties, only he knows how we will respond. Only he knows how much pressure is needed to qualify us to serve others. The principle is not mechanistic because people are involved. One could make the case from biblical examples, like Moses, David, and Paul, that those who have suffered deeply have made a greater impact on their world. I think the most that these examples prove is that troubles are not a sure sign that one is unqualified. Thanks for the feedback!