As the pope heads to Portugal, he's laying the groundwork for the church's future and his own...

When Pope Francis made the first foreign trip of his papacy, to Rio de Janeiro for World Youth Day in 2013, he urged young people to make a “mess” in their local churches, to shake things up even if it ruffled the feathers of their bishops.

As he embarks this week on another edition of World Youth Day, in Lisbon, Portugal, Francis in many ways has taken his own advice to heart. After 10 years as pope, Francis is accelerating his reform agenda and making revolutionary changes in personnel and policy that are definitely shaking things up.

Unencumbered by the shadow of Pope Benedict XVI, who died seven months ago, and despite recovering from a second intestinal surgery in as many years, the 86-year-old Francis is opening a frenetic second half of the year with his Portugal visit. He seems aware that he has a limited sweet spot of time to solidify the changes he believes are necessary for the 21st century church, and is looking to the next generation of faithful and leaders to execute them.