It's part of the concept of simple living where you do something because you must or else you/others may die. Like, you build the house in the woods because you have to, there's nothing but trees. You hunt the bear because you HAVE to, to eat. Soldiers will push themselves further because they HAVE to in order to survive. You do what it takes to land the plane because you HAVE to - nobody else can do it, and you must get down or else you'll run out fuel and crash. So what do you call that simple "do what it takes" attitude?
closed as off-topic by Cascabel, NVZ, Skooba, Davo, Mark Beadles Jul 30 '17 at 15:38
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions on choosing an ideal word or phrase must include information on how it will be used in order to be answered. For help writing a good word or phrase request, see: About single word requests" – Cascabel, NVZ, Skooba, Davo, Mark Beadles
In an obligation, one has no choice. You are obliged to do something by external force or circumstances.
If you are looking for words meaning HAVE to:
incapable of being avoided or evaded
of the utmost importance
The attitude of doing what you have to could be
an attitude, policy, or practice based on the primacy of survival as a value
Doing something because you have to:
1 to undergo especially without giving in
2 to remain firm under suffering or misfortune without yielding
to have or acquire the necessities of life
- a. The condition or quality of being necessary. b. Something necessary: The necessities of life include food, clothing, and shelter.
**Imperative ** ?
1. absolutely necessary or required: It is imperative that we leave.
The term self-sufficiency applies to many of the examples provided in the question.
build the house in the woods because you have to, there's nothing but trees.
You hunt the bear because you HAVE to, to eat.
Soldiers will push themselves further because they HAVE to in order to survive.
Self-sufficient: Able to supply one's own or its own needs without external assistance
In the example cases mentioned, the person in question is not able to rely on external assistance to solve a problem, and must do what is necessary to survive.
Wikipedia provides a more detailed description that incorporates "simple living," as mentioned in the question:
Self-sufficiency is a type of sustainable living in which nothing is consumed other than what is produced by the self-sufficient individuals. Examples of attempts at self-sufficiency in North America include simple living, homesteading, off-the-grid, survivalism, DIY ethic and the back-to-the-land movement.