While future navy seals are in training, they undergo the most grueling of conditions and exercises.
The kind that take as much mental strength as physical.
In the area of their training hangs a bell.
A bell that when rung allows all of the pain to cease. A bell that when rung allows the torture to be over.
A bell that when rung means that the recruit is quitting the training program.
If you ring the bell, you are not a seal. If you ring the bell, you quit.
There is a bell in life.
Never ring that bell.
Joel Stiff's Adventure 