Perspectives on the Desire for Growth
The Psychological View: Growth is seen as a way to avoid boredom, loss of purpose, and the "walking dead" state of just existing.
Deficiency vs. Growth Needs: The first four levels (Physiological, Safety, Belonging, Esteem) are "deficiency needs", which arise due to deprivation. Self-actualization is a "growth need", motivated by the desire to grow.