What does the saying the only job where you start at the top is digging a hole mean?

The saying "the only job where you start at the top is digging a hole" suggests that in most careers, individuals typically begin at entry-level positions and work their way up. In contrast, when digging a hole, you start at the surface, which is metaphorically referred to as the "top," and then progress downward. This phrase highlights the idea that success and advancement often require effort, experience, and time. It's a reminder that most paths in life involve gradual growth rather than immediate elevation.