From experience, the discomfort that causes you to fear is just that; discomfort. You are unlikely to actually be dying or in any real danger. Your mind is conditioned to tell your body about every little thing wrong, but the purpose of basic is to teach you that every little thing isn't a problem and a lot of things you think might be big are actually little. A lot of stuff that might make you drag out and quit is stuff that, in hindsight, you'll know you should have been able to handle.

Defeat starts in the mind. Don't let let over sensitive software tell you that your industrial grade hardware can't stand a few scuffs.