One of the annoying and frustrating things in life is distraction.
It can come in many forms: noise, images, animals, persons, etc.
When we get distracted, we lose focus on what we are doing and what we should be doing.
And in the end, we get nothing done and we also did not get going anywhere.
In the gospel, Peter got distracted by that disciple Jesus loved and started to lose focus on what Jesus had wanted him to do.
Those words that Jesus said to Peter "What does it matter to you? You are to follow me" serves as a sharp reminder for us too, that we should keep our focus on Jesus and that is all that matters.
St. Paul, in the 1st reading had that kind of focus on Jesus.
Even though he was a prisoner in chains, he kept proclaiming the kingdom of God and teaching the truth about the Lord Jesus Christ.
May we always keep our focus on Jesus and do what He wants of us. That is all that matters.