Your animal brain can and will fabricate whatever feelings and memories are necessary to convince you of two things: First to avoid situations that it feels will result in danger to itself, and second to convince you that its influence does not exist. For this reason feelings, moods, memories, spirituality, and all other forms of self-deception are untrustworthy metrics for the testing and optimization of human potential. All of the mythologies of the world have stories clearly outlining these things as pitfalls and red herrings on the path to self actualization, yet folks continue to be just as gullible as ever. Alternatively, eliminating self-deceptions through ruthless introspection and submission to external assessment is the prescription for self actualization according to these same lineages.
Your animal brain does no such thing. It is merely a telephone exchange. On the other hand Ego does as you say.