My fear of the bullet would cause me to want to avoid it, which would mean I must ensure that I do not flinch. The decision to flinch or not to flinch is in the hands of low-level circuitry in my brain, and the current inputs to that circuitry will tend to produce a flinch. So I would be well advised to change those inputs if I can, by visualizing myself on a beach, curled up in bed, sitting at my computer writing comments on Less Wrong, or some other calming, comforting environment. If this is a form of self-deception, it is one I am comfortable with. It is of the same kind that I practiced as a member of the bardic conspiracy, and I don't think that hurt my epistemic rationality any.

Emotions should be chosen to support your desired actions and results.

Another shot in the battle over priority of epistemic or instrumental rationality?