[gloriousduke]

"When your amygdala is active, you can’t have empathy for others"

This is an excellent example of those aspects of our existence that are deterministic. No matter your willpower, you may be bound by biology to act a certain way. Part of being a good person is to recognize these deterministic effects and plan your life accordingly.

For example, if you get "hangry" often, keep a food item on hand at all times so that you can address your hunger before you say something mean to your partner et al.

[agumonkey]

bound may be too strict, plasticity allows for reshaping your emotions, senses, how you process them

[gloriousduke]

I suppose that falls under "Part of being a good person is to recognize these deterministic effects and plan your life accordingly."

The type of "reshaping" you're referring to would go beyond willpower in a single moment. Probably something like cognitive behavioral therapy?