Hermit Crabs

Hermit crabs have long soft abdomens, and therefore they have to carry around with them a salvaged empty seashell into which the whole crab's body can retract to protect from predators.

As the hermit crab grows in size, it has to find a larger shell and abandon the previous one. A hermit crab with a shell that is too small cannot grow naturally than those with well fitting shells, and is more likely to be eaten as it cannot withdraw completely into the shell.

There the some similarities between a hermit crab and sales person. Both of them have to leave their comfort zone in order to grow. A hermit crab has to risk it's life when leaving it's shell for another. A sales person has to risk rejections when penetrating into a new market or an affluent market.

If the hermit crab refuses to take the risk of moving to new and larger shell, it may be choked to death. If you refuse to take risk in moving to more challenging market all the time, you will die of slow death being a sales person.