Well, Luke couldn't argue with that statement. A Jedi did face many internal challenges along his or her path in life; temptations from the Dark Side, struggles with their own role in the Force. Luke himself had faced those foes. Sometimes, he still did.

"Jedi try to avoid politics as well, but sometimes, it seems impossible to not get involved." He thought of the recently-concluded war, the sentiments that the Jedi themselves could be an autonomous nation, a consortium of Force-users that could in their own right hold political clout. Part of that, surely, was that he was brother to one of the most celebrated senators in the Galactic Alliance, and a hero himself. "We defend and advise, we don't try to rule."