Anything that is worthwhile in life typically requires lots of hard work and sacrifice. And when you are compelled to achieve, be it perfecting a skill, or protecting your family, you must be disciplined to achieve your goals. But when it becomes an obsession, you're driven by a blood lust to succeed, and nothing had better stand in your way.   First, blood thirst plagues a family Followed by practice makes perfect, or it will kill you Then, friends that literally drive you insane Finally in our featured story, a yearly sacrifice hits home Learn more about your ad choices. Visit megaphone.fm/adchoices