"the reward feels good, and we keep doing what others want us to do in order to get the reward. with the fear of being punished and that fear of not getting the reward, we start pretending to be what we are not, just to others, just to be good enough for someone else." (the four agreements). in psychological terminology, what does the phrase "fear of not getting the reward" refer to?

Positive Punishment

Explanation:

Positive punishments illustrate a kind of conditioning that includes learning through rewards and punishments in order to reinforce a deliberate behavior. Positive punishments evoke a negative consequence as a result of an unexpected and undesired behavior to reduce the probability of such behavior and circumstances in behavior. As per the question, the phrase "fear of not getting the reward" in psychological terminology is exemplified as "positive punishment" as it evokes a response that prevents the occurring of such behavior(undesired behavior) in the future. Thus, the answer is 'positive punishment' that reinforces an idea.

the answer is irony!