Jean shakes his head at what Eren suggests as the reasons. Sure he should probably apology about some of those, too.

"I've been ... training too much. I haven't really taken breaks or looked after myself." He hesitates, but adds: "Because I don't feel like I'm enough. That if I don't improve I'll fail to protect people important to me."

Jean was good on apologizing to others, if he had a reason to. In some cases even when he didn't. He sighs.

"The problem is more in being able to forgive myself, if I do."