Answer:
the adaptation-level phenomenon
Explanation:
This situation is known as the adaptation-level phenomenon. The tendency for individuals to rapidly adjust/adapt to a new stimulus/situation until it becomes normal is known as the adaptation-level phenomenon. For example, when an individual an individual buys a new car, he/she has a feeling of euphoria, however, as he/she continues to use the car, that feeling normalizes, like his/her emotion of happiness recalibrates.