There are two states of being: surviving and thriving. To survive is to limit downside, to eliminate the risk of ruin — it means fulfilling our basic need for food and shelter and companionship. Thriving is different: It’s an attempt to transcend a state of existence not out of fear but out of desire and yearning.
Running so you can avoid being eaten by a lion in the Savannah is a motion inspired by fear. It’s something your body is conditioned to do because if it didn’t, your genes would eventually die out. Likewise, when you feel hungry or when crave some semblance of security, that’s your body using impulses to tell you to take care of yourself. The bodies in the past which either ignored these impulses or malfunctioned under threat in some other way did, in fact, go extinct. This is what drives evolution via natural selection — if you don’t have the capacity to survive in a particular environment, then the code in your body won’t make it to the next generation.