This cannot be kept up for very long, because it goes against the grain. As a Darwinian, I am not setting up an opposition between 'animal nature' and 'altruism'.
Altruism is part of our nature - our animal nature.
It is also part of our nature to 'cheat' when we can, that is, to give the appearance of altruism while subtly exploiting the other. In my view there are features of the psychoanalytic situation which strongly encourage the analyst to cheat. Normally, we are not even aware that we are deviating, countertransfering, bamboozling the patient, or whatever you want to call it. Fortunately, our patients are also self-interested come into treatment with the perfectly valid unconscious assumption that we are going to try and exploit them. You won t believe what they continue to do on a daily basis.