All you have to do to quit–is ring the bell. Ring the bell and you no longer have to wake up at 5 o’clock. Ring the bell and you no longer have to do the freezing cold swims. Ring the bell and you no longer have to do the runs, the obstacle course, the PT–and you no longer have to endure the hardships of training. Just ring the bell.
Source: Here’s the Ultimate Navy SEAL Guide to Exceptional Success and Achievement | Inc.com