Elizabeth is a lively, informal, and outgoing person who just started a new job. She quickly realizes that her new company is formal and very subdued. Elizabeth adjusts her behavior and tones down her natural enthusiasm to adopt a more quiet style. This is an example of:

Answer: resilience

Explanation: Resilience is the hability to adapt to different context and result empowered from adverse situations.

In order to develop a proper resilience, the person has to be open and prove cognitive flexibility (to be "cognitive flexible" is to be able to adapt your way of thinking and processing in order to acquire new tools and perfect those you already had). Not every person is resilient because not every person has the same levels of cognitive flexibility.