Mental set and functional fixedness are two types of

I believe the answer is: fixation
In this context, fixation refers to the persistence that displayed by individuals in order to achieve a certain goal.
In order to achieve this, we need both mental set (so we can focus on which goal we want to achieve) and functional fineness (so we can make  discpline efforts to do what need to be done to achieve the goal

Dcalifornia they have the most people with 200+ people per square mile

1.  go out into nature and commune with the divine2.  experience real solitude to truly perceive nature3.  realize that individuals are meant to learn from nature and transcend it4.  think of nature as a symbol of the divine