"I'm going to do my duty as an officer in the Astral Corps," you say firmly. "We're going to finish our mission, and if rebels get in the way it's their problem."
"Good to hear. We all have our doubts sometimes, so don't worry about it."
You feel much better for vocalizing your feelings, like a great weight has been lifted from you. You can breathe easier, see more clearly. In fact, you feel invigorated.
"Thanks," you say. "I'm going to get some extra training in this afternoon, too, just to be sure I'm ready."