High/low self monitors
Some people tend to think a lot about what they do and adapt and change in different situations. Others don't think as much about what they do, they just do it.
This is known as high/low self monitoring.
Low self monitors tend to act based on their inner beliefs and values to choose how to behave, whereas high self monitors tend to use their surroundings and change their behavior to fit in.
There are many quizzes and tests that can help you determine how high of a self monitor you are, but chances are, you already know.