I cringe a little when I look at myself S28e179 Jn21:15

Peter is GRIEVED that Jesus has to ask him the same question 3 times in a row. I don't think he's mad at Jesus. I think Peter is grieved at himself; that the 3x question was needed for his own benefit.

In the church, the best LEADERS are the best LOVERS of God. So, Peter had to get this right with the Lord. In Peter's case, it is the BROKEN who make the best witnesses for the Lord.